Algebra Examples

$x + 2 z = 13$ ; $y - \frac{5}{3} z = - \frac{8}{3}$

Step 1

Simplify each term.

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Step 1.1

Apply the distributive property.

$x + 2 (\frac{3 y}{5}) + 2 (\frac{8}{5}) = 13$

$z = \frac{3 y}{5} + \frac{8}{5}$

Step 1.2

Multiply $2 \frac{3 y}{5}$ .

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Step 1.2.1

Combine $2$ and $\frac{3 y}{5}$ .

$x + \frac{2 (3 y)}{5} + 2 (\frac{8}{5}) = 13$

$z = \frac{3 y}{5} + \frac{8}{5}$

Step 1.2.2

Multiply $3$ by $2$ .

$x + \frac{6 y}{5} + 2 (\frac{8}{5}) = 13$

$z = \frac{3 y}{5} + \frac{8}{5}$

$x + \frac{6 y}{5} + 2 (\frac{8}{5}) = 13$

$z = \frac{3 y}{5} + \frac{8}{5}$

Step 1.3

Multiply $2 (\frac{8}{5})$ .

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Step 1.3.1

Combine $2$ and $\frac{8}{5}$ .

$x + \frac{6 y}{5} + \frac{2 \cdot 8}{5} = 13$

$z = \frac{3 y}{5} + \frac{8}{5}$

Step 1.3.2

Multiply $2$ by $8$ .

$x + \frac{6 y}{5} + \frac{16}{5} = 13$

$z = \frac{3 y}{5} + \frac{8}{5}$

$x + \frac{6 y}{5} + \frac{16}{5} = 13$

$z = \frac{3 y}{5} + \frac{8}{5}$

$x + \frac{6 y}{5} + \frac{16}{5} = 13$

$z = \frac{3 y}{5} + \frac{8}{5}$

Step 2

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

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Step 2.1

Subtract $\frac{6 y}{5}$ from both sides of the equation.

$x + \frac{16}{5} = 13 - \frac{6 y}{5}$

$z = \frac{3 y}{5} + \frac{8}{5}$

Step 2.2

Subtract $\frac{16}{5}$ from both sides of the equation.

$x = 13 - \frac{6 y}{5} - \frac{16}{5}$

$z = \frac{3 y}{5} + \frac{8}{5}$

Step 2.3

To write $13$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

$x = - \frac{6 y}{5} + 13 \cdot \frac{5}{5} - \frac{16}{5}$

$z = \frac{3 y}{5} + \frac{8}{5}$

Step 2.4

Combine $13$ and $\frac{5}{5}$ .

$x = - \frac{6 y}{5} + \frac{13 \cdot 5}{5} - \frac{16}{5}$

$z = \frac{3 y}{5} + \frac{8}{5}$

Step 2.5

Combine the numerators over the common denominator.

$x = - \frac{6 y}{5} + \frac{13 \cdot 5 - 16}{5}$

$z = \frac{3 y}{5} + \frac{8}{5}$

Step 2.6

Simplify the numerator.

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Step 2.6.1

Multiply $13$ by $5$ .

$x = - \frac{6 y}{5} + \frac{65 - 16}{5}$

$z = \frac{3 y}{5} + \frac{8}{5}$

Step 2.6.2

Subtract $16$ from $65$ .

$x = - \frac{6 y}{5} + \frac{49}{5}$

$z = \frac{3 y}{5} + \frac{8}{5}$

$x = - \frac{6 y}{5} + \frac{49}{5}$

$z = \frac{3 y}{5} + \frac{8}{5}$

$x = - \frac{6 y}{5} + \frac{49}{5}$

$z = \frac{3 y}{5} + \frac{8}{5}$