Precalculus Examples

$m x - 3 y = m$ , $(m - 5) x + 2 y = 1 - m$

Step 1

Solve the equation for $x$ .

Tap for more steps...

Step 1.1

Add $3 y$ to both sides of the equation.

$m x = m + 3 y$

$(m - 5) x + 2 y = 1 - m$

Step 1.2

Divide each term in $m x = m + 3 y$ by $m$ and simplify.

Tap for more steps...

Step 1.2.1

Divide each term in $m x = m + 3 y$ by $m$ .

$\frac{m x}{m} = \frac{m}{m} + \frac{3 y}{m}$

$(m - 5) x + 2 y = 1 - m$

Step 1.2.2

Simplify the left side.

Tap for more steps...

Step 1.2.2.1

Cancel the common factor of $m$ .

Tap for more steps...

Step 1.2.2.1.1

Cancel the common factor.

$\frac{m x}{m} = \frac{m}{m} + \frac{3 y}{m}$

$(m - 5) x + 2 y = 1 - m$

Step 1.2.2.1.2

Divide $x$ by $1$ .

$x = \frac{m}{m} + \frac{3 y}{m}$

$(m - 5) x + 2 y = 1 - m$

$x = \frac{m}{m} + \frac{3 y}{m}$

$(m - 5) x + 2 y = 1 - m$

$x = \frac{m}{m} + \frac{3 y}{m}$

$(m - 5) x + 2 y = 1 - m$

Step 1.2.3

Simplify the right side.

Tap for more steps...

Step 1.2.3.1

Cancel the common factor of $m$ .

Tap for more steps...

Step 1.2.3.1.1

Cancel the common factor.

$x = \frac{m}{m} + \frac{3 y}{m}$

$(m - 5) x + 2 y = 1 - m$

Step 1.2.3.1.2

Rewrite the expression.

$x = 1 + \frac{3 y}{m}$

$(m - 5) x + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

$(m - 5) x + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

$(m - 5) x + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

$(m - 5) x + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

$(m - 5) x + 2 y = 1 - m$

Step 2

Solve the equation for $y$ .

Tap for more steps...

Step 2.1

Simplify $(m - 5) (1 + \frac{3 y}{m}) + 2 y$ .

Tap for more steps...

Step 2.1.1

Simplify each term.

Tap for more steps...

Step 2.1.1.1

Expand $(m - 5) (1 + \frac{3 y}{m})$ using the FOIL Method.

Tap for more steps...

Step 2.1.1.1.1

Apply the distributive property.

$m (1 + \frac{3 y}{m}) - 5 (1 + \frac{3 y}{m}) + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

Step 2.1.1.1.2

Apply the distributive property.

$m \cdot 1 + m (\frac{3 y}{m}) - 5 (1 + \frac{3 y}{m}) + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

Step 2.1.1.1.3

Apply the distributive property.

$m \cdot 1 + m (\frac{3 y}{m}) - 5 \cdot 1 - 5 \frac{3 y}{m} + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

$m \cdot 1 + m (\frac{3 y}{m}) - 5 \cdot 1 - 5 \frac{3 y}{m} + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

Step 2.1.1.2

Simplify each term.

Tap for more steps...

Step 2.1.1.2.1

Multiply $m$ by $1$ .

$m + m (\frac{3 y}{m}) - 5 \cdot 1 - 5 \frac{3 y}{m} + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

Step 2.1.1.2.2

Cancel the common factor of $m$ .

Tap for more steps...

Step 2.1.1.2.2.1

Cancel the common factor.

$m + m (\frac{3 y}{m}) - 5 \cdot 1 - 5 \frac{3 y}{m} + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

Step 2.1.1.2.2.2

Rewrite the expression.

$m + 3 y - 5 \cdot 1 - 5 \frac{3 y}{m} + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

$m + 3 y - 5 \cdot 1 - 5 \frac{3 y}{m} + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

Step 2.1.1.2.3

Multiply $- 5$ by $1$ .

$m + 3 y - 5 - 5 \frac{3 y}{m} + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

Step 2.1.1.2.4

Multiply $- 5 \frac{3 y}{m}$ .

Tap for more steps...

Step 2.1.1.2.4.1

Combine $- 5$ and $\frac{3 y}{m}$ .

$m + 3 y - 5 + \frac{- 5 (3 y)}{m} + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

Step 2.1.1.2.4.2

Multiply $3$ by $- 5$ .

$m + 3 y - 5 + \frac{- 15 y}{m} + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

$m + 3 y - 5 + \frac{- 15 y}{m} + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

Step 2.1.1.2.5

Move the negative in front of the fraction.

$m + 3 y - 5 - \frac{15 y}{m} + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

$m + 3 y - 5 - \frac{15 y}{m} + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

$m + 3 y - 5 - \frac{15 y}{m} + 2 y = 1 - m$

$x = 1 + \frac{3 y}{m}$

Step 2.1.2

Add $3 y$ and $2 y$ .

$m + 5 y - 5 - \frac{15 y}{m} = 1 - m$

$x = 1 + \frac{3 y}{m}$

$m + 5 y - 5 - \frac{15 y}{m} = 1 - m$

$x = 1 + \frac{3 y}{m}$

Step 2.2

Find the LCD of the terms in the equation.

Tap for more steps...

Step 2.2.1

Finding the LCD of a list of values is the same as finding the LCM of the denominators of those values.

$1, 1, 1, m, 1, 1$

$x = 1 + \frac{3 y}{m}$

Step 2.2.2

The LCM of one and any expression is the expression.

$x = 1 + \frac{3 y}{m}$

Step 2.3

Multiply each term in $m + 5 y - 5 - \frac{15 y}{m} = 1 - m$ by $m$ to eliminate the fractions.

Tap for more steps...

Step 2.3.1

Multiply each term in $m + 5 y - 5 - \frac{15 y}{m} = 1 - m$ by $m$ .

$m \cdot m + 5 y m - 5 m - \frac{15 y}{m} \cdot m = 1 m - m \cdot m$

$x = 1 + \frac{3 y}{m}$

Step 2.3.2

Simplify the left side.

Tap for more steps...

Step 2.3.2.1

Simplify each term.

Tap for more steps...

Step 2.3.2.1.1

Multiply $m$ by $m$ .

$m^{2} + 5 y m - 5 m - \frac{15 y}{m} \cdot m = 1 m - m \cdot m$

$x = 1 + \frac{3 y}{m}$

Step 2.3.2.1.2

Cancel the common factor of $m$ .

Tap for more steps...

Step 2.3.2.1.2.1

Move the leading negative in $- \frac{15 y}{m}$ into the numerator.

$m^{2} + 5 y m - 5 m + \frac{- 15 y}{m} \cdot m = 1 m - m \cdot m$

$x = 1 + \frac{3 y}{m}$

Step 2.3.2.1.2.2

Cancel the common factor.

$m^{2} + 5 y m - 5 m + \frac{- 15 y}{m} \cdot m = 1 m - m \cdot m$

$x = 1 + \frac{3 y}{m}$

Step 2.3.2.1.2.3

Rewrite the expression.

$m^{2} + 5 y m - 5 m - 15 y = 1 m - m \cdot m$

$x = 1 + \frac{3 y}{m}$

$m^{2} + 5 y m - 5 m - 15 y = 1 m - m \cdot m$

$x = 1 + \frac{3 y}{m}$

$m^{2} + 5 y m - 5 m - 15 y = 1 m - m \cdot m$

$x = 1 + \frac{3 y}{m}$

$m^{2} + 5 y m - 5 m - 15 y = 1 m - m \cdot m$

$x = 1 + \frac{3 y}{m}$

Step 2.3.3

Simplify the right side.

Tap for more steps...

Step 2.3.3.1

Simplify each term.

Tap for more steps...

Step 2.3.3.1.1

Multiply $m$ by $1$ .

$m^{2} + 5 y m - 5 m - 15 y = m - m \cdot m$

$x = 1 + \frac{3 y}{m}$

Step 2.3.3.1.2

Multiply $m$ by $m$ by adding the exponents.

Tap for more steps...

Step 2.3.3.1.2.1

Move $m$ .

$m^{2} + 5 y m - 5 m - 15 y = m - (m \cdot m)$

$x = 1 + \frac{3 y}{m}$

Step 2.3.3.1.2.2

Multiply $m$ by $m$ .

$m^{2} + 5 y m - 5 m - 15 y = m - m^{2}$

$x = 1 + \frac{3 y}{m}$

$m^{2} + 5 y m - 5 m - 15 y = m - m^{2}$

$x = 1 + \frac{3 y}{m}$

$m^{2} + 5 y m - 5 m - 15 y = m - m^{2}$

$x = 1 + \frac{3 y}{m}$

$m^{2} + 5 y m - 5 m - 15 y = m - m^{2}$

$x = 1 + \frac{3 y}{m}$

$m^{2} + 5 y m - 5 m - 15 y = m - m^{2}$

$x = 1 + \frac{3 y}{m}$

Step 2.4

Solve the equation.

Tap for more steps...

Step 2.4.1

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

Tap for more steps...

Step 2.4.1.1

Subtract $m^{2}$ from both sides of the equation.

$5 y m - 5 m - 15 y = m - m^{2} - m^{2}$

$x = 1 + \frac{3 y}{m}$

Step 2.4.1.2

Add $5 m$ to both sides of the equation.

$5 y m - 15 y = m - m^{2} - m^{2} + 5 m$

$x = 1 + \frac{3 y}{m}$

Step 2.4.1.3

Add $m$ and $5 m$ .

$5 y m - 15 y = - m^{2} - m^{2} + 6 m$

$x = 1 + \frac{3 y}{m}$

Step 2.4.1.4

Subtract $m^{2}$ from $- m^{2}$ .

$5 y m - 15 y = - 2 m^{2} + 6 m$

$x = 1 + \frac{3 y}{m}$

$5 y m - 15 y = - 2 m^{2} + 6 m$

$x = 1 + \frac{3 y}{m}$

Step 2.4.2

Factor $5 y$ out of $5 y m - 15 y$ .

Tap for more steps...

Step 2.4.2.1

Factor $5 y$ out of $5 y m$ .

$5 y (m) - 15 y = - 2 m^{2} + 6 m$

$x = 1 + \frac{3 y}{m}$

Step 2.4.2.2

Factor $5 y$ out of $- 15 y$ .

$5 y (m) + 5 y (- 3) = - 2 m^{2} + 6 m$

$x = 1 + \frac{3 y}{m}$

Step 2.4.2.3

Factor $5 y$ out of $5 y (m) + 5 y (- 3)$ .

$5 y (m - 3) = - 2 m^{2} + 6 m$

$x = 1 + \frac{3 y}{m}$

$5 y (m - 3) = - 2 m^{2} + 6 m$

$x = 1 + \frac{3 y}{m}$

Step 2.4.3

Divide each term in $5 y (m - 3) = - 2 m^{2} + 6 m$ by $5 (m - 3)$ and simplify.

Tap for more steps...

Step 2.4.3.1

Divide each term in $5 y (m - 3) = - 2 m^{2} + 6 m$ by $5 (m - 3)$ .

$\frac{5 y (m - 3)}{5 (m - 3)} = \frac{- 2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 + \frac{3 y}{m}$

Step 2.4.3.2

Simplify the left side.

Tap for more steps...

Step 2.4.3.2.1

Cancel the common factor of $5$ .

Tap for more steps...

Step 2.4.3.2.1.1

Cancel the common factor.

$\frac{5 y (m - 3)}{5 (m - 3)} = \frac{- 2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 + \frac{3 y}{m}$

Step 2.4.3.2.1.2

Rewrite the expression.

$\frac{y (m - 3)}{m - 3} = \frac{- 2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 + \frac{3 y}{m}$

$\frac{y (m - 3)}{m - 3} = \frac{- 2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 + \frac{3 y}{m}$

Step 2.4.3.2.2

Cancel the common factor of $m - 3$ .

Tap for more steps...

Step 2.4.3.2.2.1

Cancel the common factor.

$\frac{y (m - 3)}{m - 3} = \frac{- 2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 + \frac{3 y}{m}$

Step 2.4.3.2.2.2

Divide $y$ by $1$ .

$y = \frac{- 2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 + \frac{3 y}{m}$

$y = \frac{- 2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 + \frac{3 y}{m}$

$y = \frac{- 2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 + \frac{3 y}{m}$

Step 2.4.3.3

Simplify the right side.

Tap for more steps...

Step 2.4.3.3.1

Move the negative in front of the fraction.

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 + \frac{3 y}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 + \frac{3 y}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 + \frac{3 y}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 + \frac{3 y}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 + \frac{3 y}{m}$

Step 3

Simplify the right side.

Tap for more steps...

Step 3.1

Simplify $1 + \frac{3 (- \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)})}{m}$ .

Tap for more steps...

Step 3.1.1

Simplify each term.

Tap for more steps...

Step 3.1.1.1

Simplify the numerator.

Tap for more steps...

Step 3.1.1.1.1

Combine the numerators over the common denominator.

$x = 1 + \frac{3 (\frac{- 2 m^{2} + 6 m}{5 (m - 3)})}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.1.2

Factor $2 m$ out of $- 2 m^{2} + 6 m$ .

Tap for more steps...

Step 3.1.1.1.2.1

Factor $2 m$ out of $- 2 m^{2}$ .

$x = 1 + \frac{3 (\frac{2 m (- m) + 6 m}{5 (m - 3)})}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.1.2.2

Factor $2 m$ out of $6 m$ .

$x = 1 + \frac{3 (\frac{2 m (- m) + 2 m (3)}{5 (m - 3)})}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.1.2.3

Factor $2 m$ out of $2 m (- m) + 2 m (3)$ .

$x = 1 + \frac{3 (\frac{2 m (- m + 3)}{5 (m - 3)})}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 + \frac{3 (\frac{2 m (- m + 3)}{5 (m - 3)})}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.1.3

Cancel the common factor of $- m + 3$ and $m - 3$ .

Tap for more steps...

Step 3.1.1.1.3.1

Factor $- 1$ out of $- m$ .

$x = 1 + \frac{3 (\frac{2 m (- (m) + 3)}{5 (m - 3)})}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.1.3.2

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

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

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.1.3.3

Factor $- 1$ out of $- (m) - 1 (- 3)$ .

$x = 1 + \frac{3 (\frac{2 m (- (m - 3))}{5 (m - 3)})}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.1.3.4

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

$x = 1 + \frac{3 (\frac{2 m (- 1 (m - 3))}{5 (m - 3)})}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.1.3.5

Cancel the common factor.

$x = 1 + \frac{3 (\frac{2 m (- 1 (m - 3))}{5 (m - 3)})}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.1.3.6

Rewrite the expression.

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

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

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

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.1.4

Multiply $- 1$ by $2$ .

$x = 1 + \frac{3 (\frac{- 2 m}{5})}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.1.5

Move the negative in front of the fraction.

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

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.1.6

Combine exponents.

Tap for more steps...

Step 3.1.1.1.6.1

Factor out negative.

$x = 1 + \frac{- (3 (\frac{2 m}{5}))}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.1.6.2

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

$x = 1 + \frac{- \frac{3 (2 m)}{5}}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.1.6.3

Multiply $2$ by $3$ .

$x = 1 + \frac{- \frac{6 m}{5}}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 + \frac{- \frac{6 m}{5}}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 + \frac{- \frac{6 m}{5}}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.2

Multiply the numerator by the reciprocal of the denominator.

$x = 1 - \frac{6 m}{5} \cdot \frac{1}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.3

Cancel the common factor of $m$ .

Tap for more steps...

Step 3.1.1.3.1

Move the leading negative in $- \frac{6 m}{5}$ into the numerator.

$x = 1 + \frac{- 6 m}{5} \cdot \frac{1}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.3.2

Factor $m$ out of $- 6 m$ .

$x = 1 + \frac{m \cdot - 6}{5} \cdot \frac{1}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.3.3

Cancel the common factor.

$x = 1 + \frac{m \cdot - 6}{5} \cdot \frac{1}{m}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.3.4

Rewrite the expression.

$x = 1 + \frac{- 6}{5}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 + \frac{- 6}{5}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.1.4

Move the negative in front of the fraction.

$x = 1 - \frac{6}{5}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = 1 - \frac{6}{5}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.2

Simplify the expression.

Tap for more steps...

Step 3.1.2.1

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

$x = \frac{5}{5} - \frac{6}{5}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.2.2

Combine the numerators over the common denominator.

$x = \frac{5 - 6}{5}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.2.3

Subtract $6$ from $5$ .

$x = \frac{- 1}{5}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

Step 3.1.2.4

Move the negative in front of the fraction.

$x = - \frac{1}{5}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = - \frac{1}{5}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = - \frac{1}{5}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$

$x = - \frac{1}{5}$

$y = - \frac{2 m^{2}}{5 (m - 3)} + \frac{6 m}{5 (m - 3)}$