Precalculus Examples

$2 x + y + 2 z - 4 w = 10$ , $x + 3 y + 2 z - 11 w = 17$ , $3 x + y + 7 z - 21 w = 0$

Step 1

Solve the equation for $x$ .

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Step 1.1

Move all terms not containing $x$ to the right side of the equation.

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Step 1.1.1

Subtract $y$ from both sides of the equation.

$2 x + 2 z - 4 w = 10 - y$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 1.1.2

Subtract $2 z$ from both sides of the equation.

$2 x - 4 w = 10 - y - 2 z$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 1.1.3

Add $4 w$ to both sides of the equation.

$2 x = 10 - y - 2 z + 4 w$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

$2 x = 10 - y - 2 z + 4 w$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 1.2

Divide each term in $2 x = 10 - y - 2 z + 4 w$ by $2$ and simplify.

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Step 1.2.1

Divide each term in $2 x = 10 - y - 2 z + 4 w$ by $2$ .

$\frac{2 x}{2} = \frac{10}{2} + \frac{- y}{2} + \frac{- 2 z}{2} + \frac{4 w}{2}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 1.2.2

Simplify the left side.

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Step 1.2.2.1

Cancel the common factor of $2$ .

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Step 1.2.2.1.1

Cancel the common factor.

$\frac{2 x}{2} = \frac{10}{2} + \frac{- y}{2} + \frac{- 2 z}{2} + \frac{4 w}{2}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 1.2.2.1.2

Divide $x$ by $1$ .

$x = \frac{10}{2} + \frac{- y}{2} + \frac{- 2 z}{2} + \frac{4 w}{2}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

$x = \frac{10}{2} + \frac{- y}{2} + \frac{- 2 z}{2} + \frac{4 w}{2}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

$x = \frac{10}{2} + \frac{- y}{2} + \frac{- 2 z}{2} + \frac{4 w}{2}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 1.2.3

Simplify the right side.

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Step 1.2.3.1

Simplify each term.

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Step 1.2.3.1.1

Divide $10$ by $2$ .

$x = 5 + \frac{- y}{2} + \frac{- 2 z}{2} + \frac{4 w}{2}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 1.2.3.1.2

Move the negative in front of the fraction.

$x = 5 - \frac{y}{2} + \frac{- 2 z}{2} + \frac{4 w}{2}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 1.2.3.1.3

Cancel the common factor of $- 2$ and $2$ .

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Step 1.2.3.1.3.1

Factor $2$ out of $- 2 z$ .

$x = 5 - \frac{y}{2} + \frac{2 (- z)}{2} + \frac{4 w}{2}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 1.2.3.1.3.2

Cancel the common factors.

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Step 1.2.3.1.3.2.1

Factor $2$ out of $2$ .

$x = 5 - \frac{y}{2} + \frac{2 (- z)}{2 (1)} + \frac{4 w}{2}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 1.2.3.1.3.2.2

Cancel the common factor.

$x = 5 - \frac{y}{2} + \frac{2 (- z)}{2 \cdot 1} + \frac{4 w}{2}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 1.2.3.1.3.2.3

Rewrite the expression.

$x = 5 - \frac{y}{2} + \frac{- z}{1} + \frac{4 w}{2}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 1.2.3.1.3.2.4

Divide $- z$ by $1$ .

$x = 5 - \frac{y}{2} - z + \frac{4 w}{2}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

$x = 5 - \frac{y}{2} - z + \frac{4 w}{2}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

$x = 5 - \frac{y}{2} - z + \frac{4 w}{2}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 1.2.3.1.4

Cancel the common factor of $4$ and $2$ .

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Step 1.2.3.1.4.1

Factor $2$ out of $4 w$ .

$x = 5 - \frac{y}{2} - z + \frac{2 (2 w)}{2}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 1.2.3.1.4.2

Cancel the common factors.

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Step 1.2.3.1.4.2.1

Factor $2$ out of $2$ .

$x = 5 - \frac{y}{2} - z + \frac{2 (2 w)}{2 (1)}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 1.2.3.1.4.2.2

Cancel the common factor.

$x = 5 - \frac{y}{2} - z + \frac{2 (2 w)}{2 \cdot 1}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 1.2.3.1.4.2.3

Rewrite the expression.

$x = 5 - \frac{y}{2} - z + \frac{2 w}{1}$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 1.2.3.1.4.2.4

Divide $2 w$ by $1$ .

$x = 5 - \frac{y}{2} - z + 2 w$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

$x = 5 - \frac{y}{2} - z + 2 w$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

$x = 5 - \frac{y}{2} - z + 2 w$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

$x = 5 - \frac{y}{2} - z + 2 w$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

$x = 5 - \frac{y}{2} - z + 2 w$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

$x = 5 - \frac{y}{2} - z + 2 w$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

$x = 5 - \frac{y}{2} - z + 2 w$

$x + 3 y + 2 z - 11 w = 17$

$3 x + y + 7 z - 21 w = 0$

Step 2

Solve the equation for $y$ .

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Step 2.1

Simplify $(5 - \frac{y}{2} - z + 2 w) + 3 y + 2 z - 11 w$ .

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Step 2.1.1

To write $3 y$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$5 - z + 2 w - \frac{y}{2} + 3 y \cdot \frac{2}{2} + 2 z - 11 w = 17$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.1.2

Simplify terms.

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Step 2.1.2.1

Combine $3 y$ and $\frac{2}{2}$ .

$5 - z + 2 w - \frac{y}{2} + \frac{3 y \cdot 2}{2} + 2 z - 11 w = 17$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.1.2.2

Combine the numerators over the common denominator.

$5 - z + 2 w + \frac{- y + 3 y \cdot 2}{2} + 2 z - 11 w = 17$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$5 - z + 2 w + \frac{- y + 3 y \cdot 2}{2} + 2 z - 11 w = 17$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.1.3

Simplify each term.

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Step 2.1.3.1

Simplify the numerator.

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Step 2.1.3.1.1

Factor $y$ out of $- y + 3 y \cdot 2$ .

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Step 2.1.3.1.1.1

Factor $y$ out of $- y$ .

$5 - z + 2 w + \frac{y \cdot - 1 + 3 y \cdot 2}{2} + 2 z - 11 w = 17$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.1.3.1.1.2

Factor $y$ out of $3 y \cdot 2$ .

$5 - z + 2 w + \frac{y \cdot - 1 + y (3 \cdot 2)}{2} + 2 z - 11 w = 17$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.1.3.1.1.3

Factor $y$ out of $y \cdot - 1 + y (3 \cdot 2)$ .

$5 - z + 2 w + \frac{y (- 1 + 3 \cdot 2)}{2} + 2 z - 11 w = 17$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$5 - z + 2 w + \frac{y (- 1 + 3 \cdot 2)}{2} + 2 z - 11 w = 17$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.1.3.1.2

Multiply $3$ by $2$ .

$5 - z + 2 w + \frac{y (- 1 + 6)}{2} + 2 z - 11 w = 17$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.1.3.1.3

Add $- 1$ and $6$ .

$5 - z + 2 w + \frac{y \cdot 5}{2} + 2 z - 11 w = 17$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$5 - z + 2 w + \frac{y \cdot 5}{2} + 2 z - 11 w = 17$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.1.3.2

Move $5$ to the left of $y$ .

$5 - z + 2 w + \frac{5 y}{2} + 2 z - 11 w = 17$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$5 - z + 2 w + \frac{5 y}{2} + 2 z - 11 w = 17$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.1.4

Simplify by adding terms.

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Step 2.1.4.1

Add $- z$ and $2 z$ .

$5 + z + 2 w + \frac{5 y}{2} - 11 w = 17$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.1.4.2

Subtract $11 w$ from $2 w$ .

$5 + z - 9 w + \frac{5 y}{2} = 17$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$5 + z - 9 w + \frac{5 y}{2} = 17$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$5 + z - 9 w + \frac{5 y}{2} = 17$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.2

Move all terms not containing $y$ to the right side of the equation.

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Step 2.2.1

Subtract $5$ from both sides of the equation.

$z - 9 w + \frac{5 y}{2} = 17 - 5$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.2.2

Subtract $z$ from both sides of the equation.

$- 9 w + \frac{5 y}{2} = 17 - 5 - z$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.2.3

Add $9 w$ to both sides of the equation.

$\frac{5 y}{2} = 17 - 5 - z + 9 w$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.2.4

Subtract $5$ from $17$ .

$\frac{5 y}{2} = 12 - z + 9 w$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$\frac{5 y}{2} = 12 - z + 9 w$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.3

Multiply both sides of the equation by $\frac{2}{5}$ .

$\frac{2}{5} \cdot \frac{5 y}{2} = \frac{2}{5} \cdot (12 - z + 9 w)$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.4

Simplify both sides of the equation.

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Step 2.4.1

Simplify the left side.

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Step 2.4.1.1

Simplify $\frac{2}{5} \cdot \frac{5 y}{2}$ .

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Step 2.4.1.1.1

Cancel the common factor of $2$ .

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Step 2.4.1.1.1.1

Cancel the common factor.

$\frac{2}{5} \cdot \frac{5 y}{2} = \frac{2}{5} \cdot (12 - z + 9 w)$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.4.1.1.1.2

Rewrite the expression.

$\frac{1}{5} \cdot (5 y) = \frac{2}{5} \cdot (12 - z + 9 w)$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$\frac{1}{5} \cdot (5 y) = \frac{2}{5} \cdot (12 - z + 9 w)$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.4.1.1.2

Cancel the common factor of $5$ .

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Step 2.4.1.1.2.1

Factor $5$ out of $5 y$ .

$\frac{1}{5} \cdot (5 (y)) = \frac{2}{5} \cdot (12 - z + 9 w)$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.4.1.1.2.2

Cancel the common factor.

$\frac{1}{5} \cdot (5 y) = \frac{2}{5} \cdot (12 - z + 9 w)$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.4.1.1.2.3

Rewrite the expression.

$y = \frac{2}{5} \cdot (12 - z + 9 w)$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$y = \frac{2}{5} \cdot (12 - z + 9 w)$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$y = \frac{2}{5} \cdot (12 - z + 9 w)$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$y = \frac{2}{5} \cdot (12 - z + 9 w)$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.4.2

Simplify the right side.

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Step 2.4.2.1

Simplify $\frac{2}{5} (12 - z + 9 w)$ .

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Step 2.4.2.1.1

Apply the distributive property.

$y = \frac{2}{5} \cdot 12 + \frac{2}{5} \cdot (- z) + \frac{2}{5} \cdot (9 w)$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.4.2.1.2

Simplify.

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Step 2.4.2.1.2.1

Multiply $\frac{2}{5} \cdot 12$ .

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Step 2.4.2.1.2.1.1

Combine $\frac{2}{5}$ and $12$ .

$y = \frac{2 \cdot 12}{5} + \frac{2}{5} \cdot (- z) + \frac{2}{5} \cdot (9 w)$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.4.2.1.2.1.2

Multiply $2$ by $12$ .

$y = \frac{24}{5} + \frac{2}{5} \cdot (- z) + \frac{2}{5} \cdot (9 w)$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$y = \frac{24}{5} + \frac{2}{5} \cdot (- z) + \frac{2}{5} \cdot (9 w)$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.4.2.1.2.2

Combine $\frac{2}{5}$ and $z$ .

$y = \frac{24}{5} - \frac{2 z}{5} + \frac{2}{5} \cdot (9 w)$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.4.2.1.2.3

Multiply $\frac{2}{5} (9 w)$ .

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Step 2.4.2.1.2.3.1

Combine $9$ and $\frac{2}{5}$ .

$y = \frac{24}{5} - \frac{2 z}{5} + \frac{9 \cdot 2}{5} w$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.4.2.1.2.3.2

Multiply $9$ by $2$ .

$y = \frac{24}{5} - \frac{2 z}{5} + \frac{18}{5} w$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.4.2.1.2.3.3

Combine $\frac{18}{5}$ and $w$ .

$y = \frac{24}{5} - \frac{2 z}{5} + \frac{18 w}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$y = \frac{24}{5} - \frac{2 z}{5} + \frac{18 w}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$y = \frac{24}{5} - \frac{2 z}{5} + \frac{18 w}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$y = \frac{24}{5} - \frac{2 z}{5} + \frac{18 w}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$y = \frac{24}{5} - \frac{2 z}{5} + \frac{18 w}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$y = \frac{24}{5} - \frac{2 z}{5} + \frac{18 w}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.5

Simplify $\frac{24}{5} - \frac{2 z}{5} + \frac{18 w}{5}$ .

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Step 2.5.1

Move $\frac{24}{5}$ .

$y = - \frac{2 z}{5} + \frac{18 w}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 2.5.2

Reorder $- \frac{2 z}{5}$ and $\frac{18 w}{5}$ .

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 x + y + 7 z - 21 w = 0$

Step 3

Solve the equation for $w$ .

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Step 3.1

Simplify $3 (5 - \frac{\frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}}{2} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w$ .

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Step 3.1.1

Simplify each term.

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Step 3.1.1.1

Simplify each term.

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Step 3.1.1.1.1

Simplify the numerator.

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Step 3.1.1.1.1.1

Combine the numerators over the common denominator.

$3 (5 - \frac{\frac{18 w - 2 z}{5} + \frac{24}{5}}{2} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.1.1.2

Combine the numerators over the common denominator.

$3 (5 - \frac{\frac{18 w - 2 z + 24}{5}}{2} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.1.1.3

Factor $2$ out of $18 w - 2 z + 24$ .

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Step 3.1.1.1.1.3.1

Factor $2$ out of $18 w$ .

$3 (5 - \frac{\frac{2 (9 w) - 2 z + 24}{5}}{2} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.1.1.3.2

Factor $2$ out of $- 2 z$ .

$3 (5 - \frac{\frac{2 (9 w) + 2 (- z) + 24}{5}}{2} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.1.1.3.3

Factor $2$ out of $24$ .

$3 (5 - \frac{\frac{2 (9 w) + 2 (- z) + 2 (12)}{5}}{2} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.1.1.3.4

Factor $2$ out of $2 (9 w) + 2 (- z)$ .

$3 (5 - \frac{\frac{2 (9 w - z) + 2 (12)}{5}}{2} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.1.1.3.5

Factor $2$ out of $2 (9 w - z) + 2 (12)$ .

$3 (5 - \frac{\frac{2 (9 w - z + 12)}{5}}{2} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 (5 - \frac{\frac{2 (9 w - z + 12)}{5}}{2} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 (5 - \frac{\frac{2 (9 w - z + 12)}{5}}{2} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.1.2

Multiply the numerator by the reciprocal of the denominator.

$3 (5 - (\frac{2 (9 w - z + 12)}{5} \cdot \frac{1}{2}) - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.1.3

Cancel the common factor of $2$ .

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Step 3.1.1.1.3.1

Cancel the common factor.

$3 (5 - (\frac{2 (9 w - z + 12)}{5} \cdot \frac{1}{2}) - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.1.3.2

Rewrite the expression.

$3 (5 - \frac{9 w - z + 12}{5} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 (5 - \frac{9 w - z + 12}{5} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 (5 - \frac{9 w - z + 12}{5} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.2

To write $5$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

$3 (5 \cdot \frac{5}{5} - \frac{9 w - z + 12}{5} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.3

Combine $5$ and $\frac{5}{5}$ .

$3 (\frac{5 \cdot 5}{5} - \frac{9 w - z + 12}{5} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.4

Combine the numerators over the common denominator.

$3 (\frac{5 \cdot 5 - (9 w - z + 12)}{5} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.5

Multiply $5$ by $5$ .

$3 (\frac{25 - (9 w - z + 12)}{5} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.6

Simplify the numerator.

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Step 3.1.1.6.1

Apply the distributive property.

$3 (\frac{25 - (9 w) + z - 1 \cdot 12}{5} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.6.2

Simplify.

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Step 3.1.1.6.2.1

Multiply $9$ by $- 1$ .

$3 (\frac{25 - 9 w + z - 1 \cdot 12}{5} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.6.2.2

Multiply $- - z$ .

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Step 3.1.1.6.2.2.1

Multiply $- 1$ by $- 1$ .

$3 (\frac{25 - 9 w + 1 z - 1 \cdot 12}{5} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.6.2.2.2

Multiply $z$ by $1$ .

$3 (\frac{25 - 9 w + z - 1 \cdot 12}{5} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 (\frac{25 - 9 w + z - 1 \cdot 12}{5} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.6.2.3

Multiply $- 1$ by $12$ .

$3 (\frac{25 - 9 w + z - 12}{5} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 (\frac{25 - 9 w + z - 12}{5} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.6.3

Subtract $12$ from $25$ .

$3 (\frac{- 9 w + z + 13}{5} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 (\frac{- 9 w + z + 13}{5} - z + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.7

To write $- z$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

$3 (\frac{- 9 w + z + 13}{5} - z \cdot \frac{5}{5} + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.8

Combine $- z$ and $\frac{5}{5}$ .

$3 (\frac{- 9 w + z + 13}{5} + \frac{- z \cdot 5}{5} + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.9

Combine the numerators over the common denominator.

$3 (\frac{- 9 w + z + 13 - z \cdot 5}{5} + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.10

Simplify the numerator.

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Step 3.1.1.10.1

Multiply $5$ by $- 1$ .

$3 (\frac{- 9 w + z + 13 - 5 z}{5} + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.10.2

Subtract $5 z$ from $z$ .

$3 (\frac{- 9 w - 4 z + 13}{5} + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 (\frac{- 9 w - 4 z + 13}{5} + 2 w) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.11

To write $2 w$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

$3 (\frac{- 9 w - 4 z + 13}{5} + 2 w \cdot \frac{5}{5}) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.12

Combine $2 w$ and $\frac{5}{5}$ .

$3 (\frac{- 9 w - 4 z + 13}{5} + \frac{2 w \cdot 5}{5}) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.13

Combine the numerators over the common denominator.

$3 (\frac{- 9 w - 4 z + 13 + 2 w \cdot 5}{5}) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.14

Simplify the numerator.

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Step 3.1.1.14.1

Multiply $5$ by $2$ .

$3 (\frac{- 9 w - 4 z + 13 + 10 w}{5}) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.14.2

Add $- 9 w$ and $10 w$ .

$3 (\frac{w - 4 z + 13}{5}) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$3 (\frac{w - 4 z + 13}{5}) + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.1.15

Combine $3$ and $\frac{w - 4 z + 13}{5}$ .

$\frac{3 (w - 4 z + 13)}{5} + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$\frac{3 (w - 4 z + 13)}{5} + \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5} + 7 z - 21 w = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.2

Combine the numerators over the common denominator.

$7 z - 21 w + \frac{3 (w - 4 z + 13) + 18 w - 2 z + 24}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.3

Simplify each term.

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Step 3.1.3.1

Apply the distributive property.

$7 z - 21 w + \frac{3 w + 3 (- 4 z) + 3 \cdot 13 + 18 w - 2 z + 24}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.3.2

Simplify.

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Step 3.1.3.2.1

Multiply $- 4$ by $3$ .

$7 z - 21 w + \frac{3 w - 12 z + 3 \cdot 13 + 18 w - 2 z + 24}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.3.2.2

Multiply $3$ by $13$ .

$7 z - 21 w + \frac{3 w - 12 z + 39 + 18 w - 2 z + 24}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$7 z - 21 w + \frac{3 w - 12 z + 39 + 18 w - 2 z + 24}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$7 z - 21 w + \frac{3 w - 12 z + 39 + 18 w - 2 z + 24}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.4

Simplify terms.

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Step 3.1.4.1

Add $3 w$ and $18 w$ .

$7 z - 21 w + \frac{21 w - 12 z + 39 - 2 z + 24}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.4.2

Subtract $2 z$ from $- 12 z$ .

$7 z - 21 w + \frac{21 w - 14 z + 39 + 24}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.4.3

Add $39$ and $24$ .

$7 z - 21 w + \frac{21 w - 14 z + 63}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.4.4

Factor $7$ out of $21 w - 14 z + 63$ .

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Step 3.1.4.4.1

Factor $7$ out of $21 w$ .

$7 z - 21 w + \frac{7 (3 w) - 14 z + 63}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.4.4.2

Factor $7$ out of $- 14 z$ .

$7 z - 21 w + \frac{7 (3 w) + 7 (- 2 z) + 63}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.4.4.3

Factor $7$ out of $63$ .

$7 z - 21 w + \frac{7 (3 w) + 7 (- 2 z) + 7 (9)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.4.4.4

Factor $7$ out of $7 (3 w) + 7 (- 2 z)$ .

$7 z - 21 w + \frac{7 (3 w - 2 z) + 7 (9)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.4.4.5

Factor $7$ out of $7 (3 w - 2 z) + 7 (9)$ .

$7 z - 21 w + \frac{7 (3 w - 2 z + 9)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$7 z - 21 w + \frac{7 (3 w - 2 z + 9)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$7 z - 21 w + \frac{7 (3 w - 2 z + 9)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.5

To write $7 z$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

$- 21 w + 7 z \cdot \frac{5}{5} + \frac{7 (3 w - 2 z + 9)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.6

Simplify terms.

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Step 3.1.6.1

Combine $7 z$ and $\frac{5}{5}$ .

$- 21 w + \frac{7 z \cdot 5}{5} + \frac{7 (3 w - 2 z + 9)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.6.2

Combine the numerators over the common denominator.

$- 21 w + \frac{7 z \cdot 5 + 7 (3 w - 2 z + 9)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$- 21 w + \frac{7 z \cdot 5 + 7 (3 w - 2 z + 9)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.7

Simplify the numerator.

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Step 3.1.7.1

Factor $7$ out of $7 z \cdot 5 + 7 (3 w - 2 z + 9)$ .

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Step 3.1.7.1.1

Factor $7$ out of $7 z \cdot 5$ .

$- 21 w + \frac{7 (z \cdot 5) + 7 (3 w - 2 z + 9)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.7.1.2

Factor $7$ out of $7 (z \cdot 5) + 7 (3 w - 2 z + 9)$ .

$- 21 w + \frac{7 (z \cdot 5 + 3 w - 2 z + 9)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$- 21 w + \frac{7 (z \cdot 5 + 3 w - 2 z + 9)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.7.2

Subtract $2 z$ from $z \cdot 5$ .

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Step 3.1.7.2.1

Reorder $z$ and $5$ .

$- 21 w + \frac{7 (3 w + 5 \cdot z - 2 z + 9)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.7.2.2

Subtract $2 z$ from $5 \cdot z$ .

$- 21 w + \frac{7 (3 w + 3 \cdot z + 9)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$- 21 w + \frac{7 (3 w + 3 \cdot z + 9)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.7.3

Factor $3$ out of $3 w + 3 \cdot z + 9$ .

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Step 3.1.7.3.1

Factor $3$ out of $3 w$ .

$- 21 w + \frac{7 (3 (w) + 3 \cdot z + 9)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.7.3.2

Factor $3$ out of $3 \cdot z$ .

$- 21 w + \frac{7 (3 (w) + 3 (z) + 9)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.7.3.3

Factor $3$ out of $9$ .

$- 21 w + \frac{7 (3 (w) + 3 z + 3 \cdot 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.7.3.4

Factor $3$ out of $3 (w) + 3 z$ .

$- 21 w + \frac{7 (3 (w + z) + 3 \cdot 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.7.3.5

Factor $3$ out of $3 (w + z) + 3 \cdot 3$ .

$- 21 w + \frac{7 (3 (w + z + 3))}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$- 21 w + \frac{7 \cdot (3 (w + z + 3))}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.7.4

Multiply $7$ by $3$ .

$- 21 w + \frac{21 (w + z + 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$- 21 w + \frac{21 (w + z + 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.8

To write $- 21 w$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

$- 21 w \cdot \frac{5}{5} + \frac{21 (w + z + 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.9

Simplify terms.

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Step 3.1.9.1

Combine $- 21 w$ and $\frac{5}{5}$ .

$\frac{- 21 w \cdot 5}{5} + \frac{21 (w + z + 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.9.2

Combine the numerators over the common denominator.

$\frac{- 21 w \cdot 5 + 21 (w + z + 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$\frac{- 21 w \cdot 5 + 21 (w + z + 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.10

Simplify the numerator.

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Step 3.1.10.1

Factor $21$ out of $- 21 w \cdot 5 + 21 (w + z + 3)$ .

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Step 3.1.10.1.1

Factor $21$ out of $- 21 w \cdot 5$ .

$\frac{21 (- w \cdot 5) + 21 (w + z + 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.10.1.2

Factor $21$ out of $21 (- w \cdot 5) + 21 (w + z + 3)$ .

$\frac{21 (- w \cdot 5 + w + z + 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$\frac{21 (- w \cdot 5 + w + z + 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.10.2

Multiply $5$ by $- 1$ .

$\frac{21 (- 5 w + w + z + 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.10.3

Add $- 5 w$ and $w$ .

$\frac{21 (- 4 w + z + 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$\frac{21 (- 4 w + z + 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.11

Simplify with factoring out.

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Step 3.1.11.1

Factor $- 1$ out of $- 4 w$ .

$\frac{21 (- (4 w) + z + 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.11.2

Factor $- 1$ out of $z$ .

$\frac{21 (- (4 w) - 1 (- z) + 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.11.3

Factor $- 1$ out of $- (4 w) - 1 (- z)$ .

$\frac{21 (- (4 w - z) + 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.11.4

Rewrite $3$ as $- 1 (- 3)$ .

$\frac{21 (- (4 w - z) - 1 \cdot - 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.11.5

Factor $- 1$ out of $- (4 w - z) - 1 (- 3)$ .

$\frac{21 (- (4 w - z - 3))}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.11.6

Simplify the expression.

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Step 3.1.11.6.1

Rewrite $- (4 w - z - 3)$ as $- 1 (4 w - z - 3)$ .

$\frac{21 (- 1 (4 w - z - 3))}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.1.11.6.2

Move the negative in front of the fraction.

$- \frac{21 (4 w - z - 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$- \frac{21 (4 w - z - 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$- \frac{21 (4 w - z - 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$- \frac{21 (4 w - z - 3)}{5} = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.2

Set the numerator equal to zero.

$21 (4 w - z - 3) = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.3

Solve the equation for $w$ .

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Step 3.3.1

Divide each term in $21 (4 w - z - 3) = 0$ by $21$ and simplify.

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Step 3.3.1.1

Divide each term in $21 (4 w - z - 3) = 0$ by $21$ .

$\frac{21 (4 w - z - 3)}{21} = \frac{0}{21}$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.3.1.2

Simplify the left side.

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Step 3.3.1.2.1

Cancel the common factor of $21$ .

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Step 3.3.1.2.1.1

Cancel the common factor.

$\frac{21 (4 w - z - 3)}{21} = \frac{0}{21}$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.3.1.2.1.2

Divide $4 w - z - 3$ by $1$ .

$4 w - z - 3 = \frac{0}{21}$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$4 w - z - 3 = \frac{0}{21}$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$4 w - z - 3 = \frac{0}{21}$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.3.1.3

Simplify the right side.

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Step 3.3.1.3.1

Divide $0$ by $21$ .

$4 w - z - 3 = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$4 w - z - 3 = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$4 w - z - 3 = 0$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.3.2

Move all terms not containing $w$ to the right side of the equation.

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Step 3.3.2.1

Add $z$ to both sides of the equation.

$4 w - 3 = z$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.3.2.2

Add $3$ to both sides of the equation.

$4 w = z + 3$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$4 w = z + 3$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.3.3

Divide each term in $4 w = z + 3$ by $4$ and simplify.

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Step 3.3.3.1

Divide each term in $4 w = z + 3$ by $4$ .

$\frac{4 w}{4} = \frac{z}{4} + \frac{3}{4}$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.3.3.2

Simplify the left side.

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Step 3.3.3.2.1

Cancel the common factor of $4$ .

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Step 3.3.3.2.1.1

Cancel the common factor.

$\frac{4 w}{4} = \frac{z}{4} + \frac{3}{4}$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 3.3.3.2.1.2

Divide $w$ by $1$ .

$w = \frac{z}{4} + \frac{3}{4}$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$w = \frac{z}{4} + \frac{3}{4}$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$w = \frac{z}{4} + \frac{3}{4}$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$w = \frac{z}{4} + \frac{3}{4}$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$w = \frac{z}{4} + \frac{3}{4}$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

$w = \frac{z}{4} + \frac{3}{4}$

$y = \frac{18 w}{5} - \frac{2 z}{5} + \frac{24}{5}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4

Simplify the right side.

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Step 4.1

Simplify $\frac{18 (\frac{z}{4} + \frac{3}{4})}{5} - \frac{2 z}{5} + \frac{24}{5}$ .

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Step 4.1.1

Combine the numerators over the common denominator.

$y = \frac{18 (\frac{z}{4} + \frac{3}{4}) - 2 z + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.2

Simplify each term.

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Step 4.1.2.1

Apply the distributive property.

$y = \frac{18 (\frac{z}{4}) + 18 (\frac{3}{4}) - 2 z + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.2.2

Cancel the common factor of $2$ .

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Step 4.1.2.2.1

Factor $2$ out of $18$ .

$y = \frac{2 (9) (\frac{z}{4}) + 18 (\frac{3}{4}) - 2 z + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.2.2.2

Factor $2$ out of $4$ .

$y = \frac{2 \cdot (9 (\frac{z}{2 \cdot 2})) + 18 (\frac{3}{4}) - 2 z + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.2.2.3

Cancel the common factor.

$y = \frac{2 \cdot (9 (\frac{z}{2 \cdot 2})) + 18 (\frac{3}{4}) - 2 z + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.2.2.4

Rewrite the expression.

$y = \frac{9 (\frac{z}{2}) + 18 (\frac{3}{4}) - 2 z + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

$y = \frac{9 (\frac{z}{2}) + 18 (\frac{3}{4}) - 2 z + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.2.3

Combine $9$ and $\frac{z}{2}$ .

$y = \frac{\frac{9 z}{2} + 18 (\frac{3}{4}) - 2 z + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.2.4

Cancel the common factor of $2$ .

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Step 4.1.2.4.1

Factor $2$ out of $18$ .

$y = \frac{\frac{9 z}{2} + 2 (9) (\frac{3}{4}) - 2 z + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.2.4.2

Factor $2$ out of $4$ .

$y = \frac{\frac{9 z}{2} + 2 \cdot (9 (\frac{3}{2 \cdot 2})) - 2 z + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.2.4.3

Cancel the common factor.

$y = \frac{\frac{9 z}{2} + 2 \cdot (9 (\frac{3}{2 \cdot 2})) - 2 z + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.2.4.4

Rewrite the expression.

$y = \frac{\frac{9 z}{2} + 9 (\frac{3}{2}) - 2 z + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

$y = \frac{\frac{9 z}{2} + 9 (\frac{3}{2}) - 2 z + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.2.5

Combine $9$ and $\frac{3}{2}$ .

$y = \frac{\frac{9 z}{2} + \frac{9 \cdot 3}{2} - 2 z + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.2.6

Multiply $9$ by $3$ .

$y = \frac{\frac{9 z}{2} + \frac{27}{2} - 2 z + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

$y = \frac{\frac{9 z}{2} + \frac{27}{2} - 2 z + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.3

To write $- 2 z$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$y = \frac{\frac{9 z}{2} - 2 z \cdot \frac{2}{2} + \frac{27}{2} + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.4

Combine $- 2 z$ and $\frac{2}{2}$ .

$y = \frac{\frac{9 z}{2} + \frac{- 2 z \cdot 2}{2} + \frac{27}{2} + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.5

Combine the numerators over the common denominator.

$y = \frac{\frac{9 z - 2 z \cdot 2}{2} + \frac{27}{2} + 24}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.6

Combine the numerators over the common denominator.

$y = \frac{24 + \frac{9 z - 2 z \cdot 2 + 27}{2}}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.7

Multiply $2$ by $- 2$ .

$y = \frac{24 + \frac{9 z - 4 z + 27}{2}}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.8

Subtract $4 z$ from $9 z$ .

$y = \frac{24 + \frac{5 z + 27}{2}}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.9

To write $24$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$y = \frac{24 \cdot \frac{2}{2} + \frac{5 z + 27}{2}}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.10

Simplify terms.

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Step 4.1.10.1

Combine $24$ and $\frac{2}{2}$ .

$y = \frac{\frac{24 \cdot 2}{2} + \frac{5 z + 27}{2}}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.10.2

Combine the numerators over the common denominator.

$y = \frac{\frac{24 \cdot 2 + 5 z + 27}{2}}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

$y = \frac{\frac{24 \cdot 2 + 5 z + 27}{2}}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.11

Simplify the numerator.

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Step 4.1.11.1

Multiply $24$ by $2$ .

$y = \frac{\frac{48 + 5 z + 27}{2}}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.11.2

Add $48$ and $27$ .

$y = \frac{\frac{5 z + 75}{2}}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.11.3

Factor $5$ out of $5 z + 75$ .

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Step 4.1.11.3.1

Factor $5$ out of $5 z$ .

$y = \frac{\frac{5 (z) + 75}{2}}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.11.3.2

Factor $5$ out of $75$ .

$y = \frac{\frac{5 z + 5 \cdot 15}{2}}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.11.3.3

Factor $5$ out of $5 z + 5 \cdot 15$ .

$y = \frac{\frac{5 (z + 15)}{2}}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

$y = \frac{\frac{5 (z + 15)}{2}}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

$y = \frac{\frac{5 (z + 15)}{2}}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.12

Multiply the numerator by the reciprocal of the denominator.

$y = \frac{5 (z + 15)}{2} \cdot \frac{1}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.13

Cancel the common factor of $5$ .

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Step 4.1.13.1

Cancel the common factor.

$y = \frac{5 (z + 15)}{2} \cdot \frac{1}{5}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 4.1.13.2

Rewrite the expression.

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = 5 - \frac{y}{2} - z + 2 w$

Step 5

Simplify the right side.

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Step 5.1

Simplify $5 - \frac{\frac{z + 15}{2}}{2} - z + 2 (\frac{z}{4} + \frac{3}{4})$ .

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Step 5.1.1

Find the common denominator.

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Step 5.1.1.1

Write $5$ as a fraction with denominator $1$ .

$x = \frac{5}{1} - \frac{\frac{z + 15}{2}}{2} - z + 2 (\frac{z}{4} + \frac{3}{4})$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.1.2

Multiply $\frac{5}{1}$ by $\frac{2}{2}$ .

$x = \frac{5}{1} \cdot \frac{2}{2} - \frac{\frac{z + 15}{2}}{2} - z + 2 (\frac{z}{4} + \frac{3}{4})$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.1.3

Multiply $\frac{5}{1}$ by $\frac{2}{2}$ .

$x = \frac{5 \cdot 2}{2} - \frac{\frac{z + 15}{2}}{2} - z + 2 (\frac{z}{4} + \frac{3}{4})$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.1.4

Write $- z$ as a fraction with denominator $1$ .

$x = \frac{5 \cdot 2}{2} - \frac{\frac{z + 15}{2}}{2} + \frac{- z}{1} + 2 (\frac{z}{4} + \frac{3}{4})$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.1.5

Multiply $\frac{- z}{1}$ by $\frac{2}{2}$ .

$x = \frac{5 \cdot 2}{2} - \frac{\frac{z + 15}{2}}{2} + \frac{- z}{1} \cdot \frac{2}{2} + 2 (\frac{z}{4} + \frac{3}{4})$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.1.6

Multiply $\frac{- z}{1}$ by $\frac{2}{2}$ .

$x = \frac{5 \cdot 2}{2} - \frac{\frac{z + 15}{2}}{2} + \frac{- z \cdot 2}{2} + 2 (\frac{z}{4} + \frac{3}{4})$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.1.7

Write $2 (\frac{z}{4} + \frac{3}{4})$ as a fraction with denominator $1$ .

$x = \frac{5 \cdot 2}{2} - \frac{\frac{z + 15}{2}}{2} + \frac{- z \cdot 2}{2} + \frac{2 (\frac{z}{4} + \frac{3}{4})}{1}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.1.8

Multiply $\frac{2 (\frac{z}{4} + \frac{3}{4})}{1}$ by $\frac{2}{2}$ .

$x = \frac{5 \cdot 2}{2} - \frac{\frac{z + 15}{2}}{2} + \frac{- z \cdot 2}{2} + \frac{2 (\frac{z}{4} + \frac{3}{4})}{1} \cdot \frac{2}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.1.9

Multiply $\frac{2 (\frac{z}{4} + \frac{3}{4})}{1}$ by $\frac{2}{2}$ .

$x = \frac{5 \cdot 2}{2} - \frac{\frac{z + 15}{2}}{2} + \frac{- z \cdot 2}{2} + \frac{2 (\frac{z}{4} + \frac{3}{4}) \cdot 2}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = \frac{5 \cdot 2}{2} - \frac{\frac{z + 15}{2}}{2} + \frac{- z \cdot 2}{2} + \frac{2 (\frac{z}{4} + \frac{3}{4}) \cdot 2}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.2

Combine the numerators over the common denominator.

$x = \frac{5 \cdot 2 - \frac{z + 15}{2} - z \cdot 2 + 2 (\frac{z}{4} + \frac{3}{4}) \cdot 2}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.3

Find the common denominator.

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Step 5.1.3.1

Write $5 \cdot 2$ as a fraction with denominator $1$ .

$x = \frac{\frac{5 \cdot 2}{1} - \frac{z + 15}{2} - z \cdot 2 + 2 (\frac{z}{4} + \frac{3}{4}) \cdot 2}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.3.2

Multiply $\frac{5 \cdot 2}{1}$ by $\frac{2}{2}$ .

$x = \frac{\frac{5 \cdot 2}{1} \cdot \frac{2}{2} - \frac{z + 15}{2} - z \cdot 2 + 2 (\frac{z}{4} + \frac{3}{4}) \cdot 2}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.3.3

Multiply $\frac{5 \cdot 2}{1}$ by $\frac{2}{2}$ .

$x = \frac{\frac{5 \cdot 2 \cdot 2}{2} - \frac{z + 15}{2} - z \cdot 2 + 2 (\frac{z}{4} + \frac{3}{4}) \cdot 2}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.3.4

Write $- z \cdot 2$ as a fraction with denominator $1$ .

$x = \frac{\frac{5 \cdot 2 \cdot 2}{2} - \frac{z + 15}{2} + \frac{- z \cdot 2}{1} + 2 (\frac{z}{4} + \frac{3}{4}) \cdot 2}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.3.5

Multiply $\frac{- z \cdot 2}{1}$ by $\frac{2}{2}$ .

$x = \frac{\frac{5 \cdot 2 \cdot 2}{2} - \frac{z + 15}{2} + \frac{- z \cdot 2}{1} \cdot \frac{2}{2} + 2 (\frac{z}{4} + \frac{3}{4}) \cdot 2}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.3.6

Multiply $\frac{- z \cdot 2}{1}$ by $\frac{2}{2}$ .

$x = \frac{\frac{5 \cdot 2 \cdot 2}{2} - \frac{z + 15}{2} + \frac{- z \cdot 2 \cdot 2}{2} + 2 (\frac{z}{4} + \frac{3}{4}) \cdot 2}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.3.7

Write $2 (\frac{z}{4} + \frac{3}{4}) \cdot 2$ as a fraction with denominator $1$ .

$x = \frac{\frac{5 \cdot 2 \cdot 2}{2} - \frac{z + 15}{2} + \frac{- z \cdot 2 \cdot 2}{2} + \frac{2 (\frac{z}{4} + \frac{3}{4}) \cdot 2}{1}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.3.8

Multiply $\frac{2 (\frac{z}{4} + \frac{3}{4}) \cdot 2}{1}$ by $\frac{2}{2}$ .

$x = \frac{\frac{5 \cdot 2 \cdot 2}{2} - \frac{z + 15}{2} + \frac{- z \cdot 2 \cdot 2}{2} + \frac{2 (\frac{z}{4} + \frac{3}{4}) \cdot 2}{1} \cdot \frac{2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.3.9

Multiply $\frac{2 (\frac{z}{4} + \frac{3}{4}) \cdot 2}{1}$ by $\frac{2}{2}$ .

$x = \frac{\frac{5 \cdot 2 \cdot 2}{2} - \frac{z + 15}{2} + \frac{- z \cdot 2 \cdot 2}{2} + \frac{2 (\frac{z}{4} + \frac{3}{4}) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = \frac{\frac{5 \cdot 2 \cdot 2}{2} - \frac{z + 15}{2} + \frac{- z \cdot 2 \cdot 2}{2} + \frac{2 (\frac{z}{4} + \frac{3}{4}) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.4

Combine the numerators over the common denominator.

$x = \frac{\frac{5 \cdot 2 \cdot 2 - (z + 15) - z \cdot 2 \cdot 2 + 2 (\frac{z}{4} + \frac{3}{4}) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5

Simplify each term.

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Step 5.1.5.1

Multiply $5 \cdot 2 \cdot 2$ .

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Step 5.1.5.1.1

Multiply $5$ by $2$ .

$x = \frac{\frac{10 \cdot 2 - (z + 15) - z \cdot 2 \cdot 2 + 2 (\frac{z}{4} + \frac{3}{4}) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.1.2

Multiply $10$ by $2$ .

$x = \frac{\frac{20 - (z + 15) - z \cdot 2 \cdot 2 + 2 (\frac{z}{4} + \frac{3}{4}) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = \frac{\frac{20 - (z + 15) - z \cdot 2 \cdot 2 + 2 (\frac{z}{4} + \frac{3}{4}) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.2

Apply the distributive property.

$x = \frac{\frac{20 - z - 1 \cdot 15 - z \cdot 2 \cdot 2 + 2 (\frac{z}{4} + \frac{3}{4}) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.3

Multiply $- 1$ by $15$ .

$x = \frac{\frac{20 - z - 15 - z \cdot 2 \cdot 2 + 2 (\frac{z}{4} + \frac{3}{4}) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.4

Multiply $2$ by $- 1$ .

$x = \frac{\frac{20 - z - 15 - 2 z \cdot 2 + 2 (\frac{z}{4} + \frac{3}{4}) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.5

Multiply $2$ by $- 2$ .

$x = \frac{\frac{20 - z - 15 - 4 z + 2 (\frac{z}{4} + \frac{3}{4}) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.6

Apply the distributive property.

$x = \frac{\frac{20 - z - 15 - 4 z + (2 (\frac{z}{4}) + 2 (\frac{3}{4})) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.7

Cancel the common factor of $2$ .

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Step 5.1.5.7.1

Factor $2$ out of $4$ .

$x = \frac{\frac{20 - z - 15 - 4 z + (2 (\frac{z}{2 (2)}) + 2 (\frac{3}{4})) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.7.2

Cancel the common factor.

$x = \frac{\frac{20 - z - 15 - 4 z + (2 (\frac{z}{2 \cdot 2}) + 2 (\frac{3}{4})) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.7.3

Rewrite the expression.

$x = \frac{\frac{20 - z - 15 - 4 z + (\frac{z}{2} + 2 (\frac{3}{4})) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = \frac{\frac{20 - z - 15 - 4 z + (\frac{z}{2} + 2 (\frac{3}{4})) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.8

Cancel the common factor of $2$ .

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Step 5.1.5.8.1

Factor $2$ out of $4$ .

$x = \frac{\frac{20 - z - 15 - 4 z + (\frac{z}{2} + 2 (\frac{3}{2 (2)})) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.8.2

Cancel the common factor.

$x = \frac{\frac{20 - z - 15 - 4 z + (\frac{z}{2} + 2 (\frac{3}{2 \cdot 2})) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.8.3

Rewrite the expression.

$x = \frac{\frac{20 - z - 15 - 4 z + (\frac{z}{2} + \frac{3}{2}) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = \frac{\frac{20 - z - 15 - 4 z + (\frac{z}{2} + \frac{3}{2}) \cdot 2 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.9

Apply the distributive property.

$x = \frac{\frac{20 - z - 15 - 4 z + (\frac{z}{2} \cdot 2 + \frac{3}{2} \cdot 2) \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.10

Cancel the common factor of $2$ .

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Step 5.1.5.10.1

Cancel the common factor.

$x = \frac{\frac{20 - z - 15 - 4 z + (\frac{z}{2} \cdot 2 + \frac{3}{2} \cdot 2) \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.10.2

Rewrite the expression.

$x = \frac{\frac{20 - z - 15 - 4 z + (z + \frac{3}{2} \cdot 2) \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = \frac{\frac{20 - z - 15 - 4 z + (z + \frac{3}{2} \cdot 2) \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.11

Cancel the common factor of $2$ .

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Step 5.1.5.11.1

Cancel the common factor.

$x = \frac{\frac{20 - z - 15 - 4 z + (z + \frac{3}{2} \cdot 2) \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.11.2

Rewrite the expression.

$x = \frac{\frac{20 - z - 15 - 4 z + (z + 3) \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = \frac{\frac{20 - z - 15 - 4 z + (z + 3) \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.12

Apply the distributive property.

$x = \frac{\frac{20 - z - 15 - 4 z + z \cdot 2 + 3 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.13

Move $2$ to the left of $z$ .

$x = \frac{\frac{20 - z - 15 - 4 z + 2 \cdot z + 3 \cdot 2}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.5.14

Multiply $3$ by $2$ .

$x = \frac{\frac{20 - z - 15 - 4 z + 2 z + 6}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = \frac{\frac{20 - z - 15 - 4 z + 2 z + 6}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.6

Simplify terms.

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Step 5.1.6.1

Subtract $15$ from $20$ .

$x = \frac{\frac{- z + 5 - 4 z + 2 z + 6}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.6.2

Subtract $4 z$ from $- z$ .

$x = \frac{\frac{- 5 z + 5 + 2 z + 6}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.6.3

Add $- 5 z$ and $2 z$ .

$x = \frac{\frac{- 3 z + 5 + 6}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.6.4

Add $5$ and $6$ .

$x = \frac{\frac{- 3 z + 11}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.6.5

Factor $- 1$ out of $- 3 z$ .

$x = \frac{\frac{- (3 z) + 11}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.6.6

Rewrite $11$ as $- 1 (- 11)$ .

$x = \frac{\frac{- (3 z) - 1 \cdot - 11}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.6.7

Factor $- 1$ out of $- (3 z) - 1 (- 11)$ .

$x = \frac{\frac{- (3 z - 11)}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.6.8

Simplify the expression.

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Step 5.1.6.8.1

Rewrite $- (3 z - 11)$ as $- 1 (3 z - 11)$ .

$x = \frac{\frac{- 1 (3 z - 11)}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.6.8.2

Move the negative in front of the fraction.

$x = \frac{- \frac{3 z - 11}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = \frac{- \frac{3 z - 11}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = \frac{- \frac{3 z - 11}{2}}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.7

Multiply the numerator by the reciprocal of the denominator.

$x = - \frac{3 z - 11}{2} \cdot \frac{1}{2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.8

Multiply $- \frac{3 z - 11}{2} \cdot \frac{1}{2}$ .

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Step 5.1.8.1

Multiply $\frac{1}{2}$ by $\frac{3 z - 11}{2}$ .

$x = - \frac{3 z - 11}{2 \cdot 2}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

Step 5.1.8.2

Multiply $2$ by $2$ .

$x = - \frac{3 z - 11}{4}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = - \frac{3 z - 11}{4}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = - \frac{3 z - 11}{4}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$

$x = - \frac{3 z - 11}{4}$

$y = \frac{z + 15}{2}$

$w = \frac{z}{4} + \frac{3}{4}$