Finite Math Examples

$5 x + 5 y + 3 z = - 4$ , $8 x + 2 y + 5 z = - 5$ , $11 x - y + h z = k$

Step 1

Solve the equation for $x$ .

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

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Subtract $5 y$ from both sides of the equation.

$5 x + 3 z = - 4 - 5 y$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

Subtract $3 z$ from both sides of the equation.

$5 x = - 4 - 5 y - 3 z$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

$5 x = - 4 - 5 y - 3 z$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

Divide each term in $5 x = - 4 - 5 y - 3 z$ by $5$ and simplify.

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Divide each term in $5 x = - 4 - 5 y - 3 z$ by $5$ .

$\frac{5 x}{5} = \frac{- 4}{5} + \frac{- 5 y}{5} + \frac{- 3 z}{5}$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

Simplify the left side.

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Cancel the common factor of $5$ .

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Cancel the common factor.

$\frac{5 x}{5} = \frac{- 4}{5} + \frac{- 5 y}{5} + \frac{- 3 z}{5}$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

Divide $x$ by $1$ .

$x = \frac{- 4}{5} + \frac{- 5 y}{5} + \frac{- 3 z}{5}$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

$x = \frac{- 4}{5} + \frac{- 5 y}{5} + \frac{- 3 z}{5}$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

$x = \frac{- 4}{5} + \frac{- 5 y}{5} + \frac{- 3 z}{5}$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

Simplify the right side.

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Simplify each term.

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Move the negative in front of the fraction.

$x = - \frac{4}{5} + \frac{- 5 y}{5} + \frac{- 3 z}{5}$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

Cancel the common factor of $- 5$ and $5$ .

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

$x = - \frac{4}{5} + \frac{5 (- y)}{5} + \frac{- 3 z}{5}$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

Cancel the common factors.

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Factor $5$ out of $5$ .

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

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

Cancel the common factor.

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

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

Rewrite the expression.

$x = - \frac{4}{5} + \frac{- y}{1} + \frac{- 3 z}{5}$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

Divide $- y$ by $1$ .

$x = - \frac{4}{5} - y + \frac{- 3 z}{5}$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

$x = - \frac{4}{5} - y + \frac{- 3 z}{5}$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

$x = - \frac{4}{5} - y + \frac{- 3 z}{5}$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

Move the negative in front of the fraction.

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$8 x + 2 y + 5 z = - 5$

$11 x - y + h z = k$

Step 2

Solve the equation for $y$ .

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Simplify $8 (- \frac{4}{5} - y - \frac{3 z}{5}) + 2 y + 5 z$ .

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Simplify each term.

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Apply the distributive property.

$8 (- \frac{4}{5}) + 8 (- y) + 8 (- \frac{3 z}{5}) + 2 y + 5 z = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Simplify.

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Multiply $8 (- \frac{4}{5})$ .

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Multiply $- 1$ by $8$ .

$- 8 (\frac{4}{5}) + 8 (- y) + 8 (- \frac{3 z}{5}) + 2 y + 5 z = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Combine $- 8$ and $\frac{4}{5}$ .

$\frac{- 8 \cdot 4}{5} + 8 (- y) + 8 (- \frac{3 z}{5}) + 2 y + 5 z = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Multiply $- 8$ by $4$ .

$\frac{- 32}{5} + 8 (- y) + 8 (- \frac{3 z}{5}) + 2 y + 5 z = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$\frac{- 32}{5} + 8 (- y) + 8 (- \frac{3 z}{5}) + 2 y + 5 z = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Multiply $- 1$ by $8$ .

$\frac{- 32}{5} - 8 y + 8 (- \frac{3 z}{5}) + 2 y + 5 z = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Multiply $8 (- \frac{3 z}{5})$ .

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Multiply $- 1$ by $8$ .

$\frac{- 32}{5} - 8 y - 8 \frac{3 z}{5} + 2 y + 5 z = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Combine $- 8$ and $\frac{3 z}{5}$ .

$\frac{- 32}{5} - 8 y + \frac{- 8 (3 z)}{5} + 2 y + 5 z = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Multiply $3$ by $- 8$ .

$\frac{- 32}{5} - 8 y + \frac{- 24 z}{5} + 2 y + 5 z = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$\frac{- 32}{5} - 8 y + \frac{- 24 z}{5} + 2 y + 5 z = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$\frac{- 32}{5} - 8 y + \frac{- 24 z}{5} + 2 y + 5 z = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Simplify each term.

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Move the negative in front of the fraction.

$- \frac{32}{5} - 8 y + \frac{- 24 z}{5} + 2 y + 5 z = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Move the negative in front of the fraction.

$- \frac{32}{5} - 8 y - \frac{24 z}{5} + 2 y + 5 z = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$- \frac{32}{5} - 8 y - \frac{24 z}{5} + 2 y + 5 z = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$- \frac{32}{5} - 8 y - \frac{24 z}{5} + 2 y + 5 z = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Add $- 8 y$ and $2 y$ .

$- \frac{32}{5} - 6 y - \frac{24 z}{5} + 5 z = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

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

$- \frac{32}{5} - 6 y - \frac{24 z}{5} + 5 z \cdot \frac{5}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

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

$- \frac{32}{5} - 6 y - \frac{24 z}{5} + \frac{5 z \cdot 5}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Combine the numerators over the common denominator.

$- \frac{32}{5} - 6 y + \frac{- 24 z + 5 z \cdot 5}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Combine the numerators over the common denominator.

$- 6 y + \frac{- 32 - 24 z + 5 z \cdot 5}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Multiply $5$ by $5$ .

$- 6 y + \frac{- 32 - 24 z + 25 z}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Add $- 24 z$ and $25 z$ .

$- 6 y + \frac{- 32 + z}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

To write $- 6 y$ as a fraction with a common denominator, multiply by $\frac{5}{5}$ .

$- 6 y \cdot \frac{5}{5} + \frac{- 32 + z}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Combine $- 6 y$ and $\frac{5}{5}$ .

$\frac{- 6 y \cdot 5}{5} + \frac{- 32 + z}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Combine the numerators over the common denominator.

$\frac{- 6 y \cdot 5 - 32 + z}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Multiply $5$ by $- 6$ .

$\frac{- 30 y - 32 + z}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Factor $- 1$ out of $- 30 y$ .

$\frac{- (30 y) - 32 + z}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Rewrite $- 32$ as $- 1 (32)$ .

$\frac{- (30 y) - 1 \cdot 32 + z}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Factor $- 1$ out of $- (30 y) - 1 (32)$ .

$\frac{- (30 y + 32) + z}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Factor $- 1$ out of $z$ .

$\frac{- (30 y + 32) - 1 (- z)}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Factor $- 1$ out of $- (30 y + 32) - 1 (- z)$ .

$\frac{- (30 y + 32 - z)}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Simplify the expression.

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Rewrite $- (30 y + 32 - z)$ as $- 1 (30 y + 32 - z)$ .

$\frac{- 1 (30 y + 32 - z)}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Move the negative in front of the fraction.

$- \frac{30 y + 32 - z}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$- \frac{30 y + 32 - z}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$- \frac{30 y + 32 - z}{5} = - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Multiply both sides of the equation by $- 5$ .

$- 5 (- \frac{30 y + 32 - z}{5}) = - 5 \cdot - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Simplify both sides of the equation.

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Simplify the left side.

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Simplify $- 5 (- \frac{30 y + 32 - z}{5})$ .

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Cancel the common factor of $5$ .

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Move the leading negative in $- \frac{30 y + 32 - z}{5}$ into the numerator.

$- 5 \frac{- (30 y + 32 - z)}{5} = - 5 \cdot - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Factor $5$ out of $- 5$ .

$5 (- 1) (\frac{- (30 y + 32 - z)}{5}) = - 5 \cdot - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Cancel the common factor.

$5 \cdot (- 1 \frac{- (30 y + 32 - z)}{5}) = - 5 \cdot - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Rewrite the expression.

$30 y + 32 - z = - 5 \cdot - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$30 y + 32 - z = - 5 \cdot - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Multiply.

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Multiply $- 1$ by $- 1$ .

$1 (30 y + 32 - z) = - 5 \cdot - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Multiply $30 y + 32 - z$ by $1$ .

$30 y + 32 - z = - 5 \cdot - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$30 y + 32 - z = - 5 \cdot - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$30 y + 32 - z = - 5 \cdot - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$30 y + 32 - z = - 5 \cdot - 5$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Simplify the right side.

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Multiply $- 5$ by $- 5$ .

$30 y + 32 - z = 25$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$30 y + 32 - z = 25$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$30 y + 32 - z = 25$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

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

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Subtract $32$ from both sides of the equation.

$30 y - z = 25 - 32$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Add $z$ to both sides of the equation.

$30 y = 25 - 32 + z$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Subtract $32$ from $25$ .

$30 y = - 7 + z$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$30 y = - 7 + z$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Divide each term in $30 y = - 7 + z$ by $30$ and simplify.

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Divide each term in $30 y = - 7 + z$ by $30$ .

$\frac{30 y}{30} = \frac{- 7}{30} + \frac{z}{30}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Simplify the left side.

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Cancel the common factor of $30$ .

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Cancel the common factor.

$\frac{30 y}{30} = \frac{- 7}{30} + \frac{z}{30}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Divide $y$ by $1$ .

$y = \frac{- 7}{30} + \frac{z}{30}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$y = \frac{- 7}{30} + \frac{z}{30}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$y = \frac{- 7}{30} + \frac{z}{30}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Simplify the right side.

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Move the negative in front of the fraction.

$y = - \frac{7}{30} + \frac{z}{30}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$y = - \frac{7}{30} + \frac{z}{30}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$y = - \frac{7}{30} + \frac{z}{30}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

$y = - \frac{7}{30} + \frac{z}{30}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$11 x - y + h z = k$

Step 3

Solve the equation for $h$ .

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Simplify $11 (- \frac{4}{5} - (- \frac{7}{30} + \frac{z}{30}) - \frac{3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z$ .

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Simplify each term.

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Find the common denominator.

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Write $- (- \frac{7}{30} + \frac{z}{30})$ as a fraction with denominator $1$ .

$11 (- \frac{4}{5} + \frac{- (- \frac{7}{30} + \frac{z}{30})}{1} - \frac{3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Multiply $\frac{- (- \frac{7}{30} + \frac{z}{30})}{1}$ by $\frac{5}{5}$ .

$11 (- \frac{4}{5} + \frac{- (- \frac{7}{30} + \frac{z}{30})}{1} \cdot \frac{5}{5} - \frac{3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Multiply $\frac{- (- \frac{7}{30} + \frac{z}{30})}{1}$ by $\frac{5}{5}$ .

$11 (- \frac{4}{5} + \frac{- (- \frac{7}{30} + \frac{z}{30}) \cdot 5}{5} - \frac{3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$11 (- \frac{4}{5} + \frac{- (- \frac{7}{30} + \frac{z}{30}) \cdot 5}{5} - \frac{3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Combine the numerators over the common denominator.

$11 (\frac{- 4 - (- \frac{7}{30} + \frac{z}{30}) \cdot 5 - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Simplify each term.

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Apply the distributive property.

$11 (\frac{- 4 + (\frac{7}{30} - \frac{z}{30}) \cdot 5 - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Multiply $- - \frac{7}{30}$ .

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Multiply $- 1$ by $- 1$ .

$11 (\frac{- 4 + (1 (\frac{7}{30}) - \frac{z}{30}) \cdot 5 - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Multiply $\frac{7}{30}$ by $1$ .

$11 (\frac{- 4 + (\frac{7}{30} - \frac{z}{30}) \cdot 5 - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$11 (\frac{- 4 + (\frac{7}{30} - \frac{z}{30}) \cdot 5 - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Apply the distributive property.

$11 (\frac{- 4 + \frac{7}{30} \cdot 5 - \frac{z}{30} \cdot 5 - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Cancel the common factor of $5$ .

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Factor $5$ out of $30$ .

$11 (\frac{- 4 + \frac{7}{5 (6)} \cdot 5 - \frac{z}{30} \cdot 5 - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Cancel the common factor.

$11 (\frac{- 4 + \frac{7}{5 \cdot 6} \cdot 5 - \frac{z}{30} \cdot 5 - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Rewrite the expression.

$11 (\frac{- 4 + \frac{7}{6} - \frac{z}{30} \cdot 5 - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$11 (\frac{- 4 + \frac{7}{6} - \frac{z}{30} \cdot 5 - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Cancel the common factor of $5$ .

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Move the leading negative in $- \frac{z}{30}$ into the numerator.

$11 (\frac{- 4 + \frac{7}{6} + \frac{- z}{30} \cdot 5 - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Factor $5$ out of $30$ .

$11 (\frac{- 4 + \frac{7}{6} + \frac{- z}{5 (6)} \cdot 5 - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Cancel the common factor.

$11 (\frac{- 4 + \frac{7}{6} + \frac{- z}{5 \cdot 6} \cdot 5 - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Rewrite the expression.

$11 (\frac{- 4 + \frac{7}{6} + \frac{- z}{6} - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$11 (\frac{- 4 + \frac{7}{6} + \frac{- z}{6} - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Move the negative in front of the fraction.

$11 (\frac{- 4 + \frac{7}{6} - \frac{z}{6} - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$11 (\frac{- 4 + \frac{7}{6} - \frac{z}{6} - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

To write $- 4$ as a fraction with a common denominator, multiply by $\frac{6}{6}$ .

$11 (\frac{- 4 \cdot \frac{6}{6} + \frac{7}{6} - \frac{z}{6} - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Combine $- 4$ and $\frac{6}{6}$ .

$11 (\frac{\frac{- 4 \cdot 6}{6} + \frac{7}{6} - \frac{z}{6} - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Combine the numerators over the common denominator.

$11 (\frac{\frac{- 4 \cdot 6 + 7}{6} - \frac{z}{6} - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Simplify the numerator.

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Multiply $- 4$ by $6$ .

$11 (\frac{\frac{- 24 + 7}{6} - \frac{z}{6} - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Add $- 24$ and $7$ .

$11 (\frac{\frac{- 17}{6} - \frac{z}{6} - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$11 (\frac{\frac{- 17}{6} - \frac{z}{6} - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Move the negative in front of the fraction.

$11 (\frac{- \frac{17}{6} - \frac{z}{6} - 3 z}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

To write $- 3 z$ as a fraction with a common denominator, multiply by $\frac{6}{6}$ .

$11 (\frac{- \frac{17}{6} - \frac{z}{6} - 3 z \cdot \frac{6}{6}}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Combine $- 3 z$ and $\frac{6}{6}$ .

$11 (\frac{- \frac{17}{6} - \frac{z}{6} + \frac{- 3 z \cdot 6}{6}}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Combine the numerators over the common denominator.

$11 (\frac{- \frac{17}{6} + \frac{- z - 3 z \cdot 6}{6}}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Combine the numerators over the common denominator.

$11 (\frac{\frac{- 17 - z - 3 z \cdot 6}{6}}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Multiply $6$ by $- 3$ .

$11 (\frac{\frac{- 17 - z - 18 z}{6}}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Subtract $18 z$ from $- z$ .

$11 (\frac{\frac{- 17 - 19 z}{6}}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Rewrite $- 17$ as $- 1 (17)$ .

$11 (\frac{\frac{- 1 \cdot 17 - 19 z}{6}}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Factor $- 1$ out of $- 19 z$ .

$11 (\frac{\frac{- 1 \cdot 17 - (19 z)}{6}}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Factor $- 1$ out of $- 1 (17) - (19 z)$ .

$11 (\frac{\frac{- 1 (17 + 19 z)}{6}}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Move the negative in front of the fraction.

$11 (\frac{- \frac{17 + 19 z}{6}}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Multiply the numerator by the reciprocal of the denominator.

$11 (- \frac{17 + 19 z}{6} \cdot \frac{1}{5}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Multiply $- \frac{17 + 19 z}{6} \cdot \frac{1}{5}$ .

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Multiply $\frac{1}{5}$ by $\frac{17 + 19 z}{6}$ .

$11 (- \frac{17 + 19 z}{5 \cdot 6}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Multiply $5$ by $6$ .

$11 (- \frac{17 + 19 z}{30}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$11 (- \frac{17 + 19 z}{30}) - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Multiply $11 (- \frac{17 + 19 z}{30})$ .

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Multiply $- 1$ by $11$ .

$- 11 \frac{17 + 19 z}{30} - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Combine $- 11$ and $\frac{17 + 19 z}{30}$ .

$\frac{- 11 (17 + 19 z)}{30} - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$\frac{- 11 (17 + 19 z)}{30} - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Move the negative in front of the fraction.

$- \frac{(11) (17 + 19 z)}{30} - (- \frac{7}{30} + \frac{z}{30}) + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Apply the distributive property.

$- \frac{11 (17 + 19 z)}{30} + \frac{7}{30} - \frac{z}{30} + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Multiply $- - \frac{7}{30}$ .

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Multiply $- 1$ by $- 1$ .

$- \frac{11 (17 + 19 z)}{30} + 1 (\frac{7}{30}) - \frac{z}{30} + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Multiply $\frac{7}{30}$ by $1$ .

$- \frac{11 (17 + 19 z)}{30} + \frac{7}{30} - \frac{z}{30} + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$- \frac{11 (17 + 19 z)}{30} + \frac{7}{30} - \frac{z}{30} + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$- \frac{11 (17 + 19 z)}{30} + \frac{7}{30} - \frac{z}{30} + h z = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Combine the numerators over the common denominator.

$h z + \frac{- 11 (17 + 19 z) + 7 - z}{30} = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Simplify each term.

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Apply the distributive property.

$h z + \frac{- 11 \cdot 17 - 11 (19 z) + 7 - z}{30} = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Multiply $- 11$ by $17$ .

$h z + \frac{- 187 - 11 (19 z) + 7 - z}{30} = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Multiply $19$ by $- 11$ .

$h z + \frac{- 187 - 209 z + 7 - z}{30} = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$h z + \frac{- 187 - 209 z + 7 - z}{30} = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Simplify terms.

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Add $- 187$ and $7$ .

$h z + \frac{- 209 z - 180 - z}{30} = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Subtract $z$ from $- 209 z$ .

$h z + \frac{- 210 z - 180}{30} = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Cancel the common factor of $- 210 z - 180$ and $30$ .

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Factor $30$ out of $- 210 z$ .

$h z + \frac{30 (- 7 z) - 180}{30} = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Factor $30$ out of $- 180$ .

$h z + \frac{30 (- 7 z) + 30 \cdot - 6}{30} = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Factor $30$ out of $30 (- 7 z) + 30 (- 6)$ .

$h z + \frac{30 (- 7 z - 6)}{30} = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Cancel the common factors.

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Factor $30$ out of $30$ .

$h z + \frac{30 (- 7 z - 6)}{30 (1)} = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Cancel the common factor.

$h z + \frac{30 (- 7 z - 6)}{30 \cdot 1} = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Rewrite the expression.

$h z + \frac{- 7 z - 6}{1} = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Divide $- 7 z - 6$ by $1$ .

$h z - 7 z - 6 = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$h z - 7 z - 6 = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$h z - 7 z - 6 = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$h z - 7 z - 6 = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$h z - 7 z - 6 = k$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

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

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Add $7 z$ to both sides of the equation.

$h z - 6 = k + 7 z$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Add $6$ to both sides of the equation.

$h z = k + 7 z + 6$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$h z = k + 7 z + 6$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Divide each term in $h z = k + 7 z + 6$ by $z$ and simplify.

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Divide each term in $h z = k + 7 z + 6$ by $z$ .

$\frac{h z}{z} = \frac{k}{z} + \frac{7 z}{z} + \frac{6}{z}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Simplify the left side.

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Cancel the common factor of $z$ .

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Cancel the common factor.

$\frac{h z}{z} = \frac{k}{z} + \frac{7 z}{z} + \frac{6}{z}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Divide $h$ by $1$ .

$h = \frac{k}{z} + \frac{7 z}{z} + \frac{6}{z}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + \frac{7 z}{z} + \frac{6}{z}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + \frac{7 z}{z} + \frac{6}{z}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Simplify the right side.

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Cancel the common factor of $z$ .

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Cancel the common factor.

$h = \frac{k}{z} + \frac{7 z}{z} + \frac{6}{z}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Divide $7$ by $1$ .

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$x = - \frac{4}{5} - y - \frac{3 z}{5}$

$y = - \frac{7}{30} + \frac{z}{30}$

Step 4

Solve the equation for $z$ .

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Simplify $5 (- \frac{4}{5} - (- \frac{7}{30} + \frac{z}{30}) - \frac{3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z$ .

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Simplify each term.

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Find the common denominator.

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Write $- (- \frac{7}{30} + \frac{z}{30})$ as a fraction with denominator $1$ .

$5 (- \frac{4}{5} + \frac{- (- \frac{7}{30} + \frac{z}{30})}{1} - \frac{3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Multiply $\frac{- (- \frac{7}{30} + \frac{z}{30})}{1}$ by $\frac{5}{5}$ .

$5 (- \frac{4}{5} + \frac{- (- \frac{7}{30} + \frac{z}{30})}{1} \cdot \frac{5}{5} - \frac{3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Multiply $\frac{- (- \frac{7}{30} + \frac{z}{30})}{1}$ by $\frac{5}{5}$ .

$5 (- \frac{4}{5} + \frac{- (- \frac{7}{30} + \frac{z}{30}) \cdot 5}{5} - \frac{3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$5 (- \frac{4}{5} + \frac{- (- \frac{7}{30} + \frac{z}{30}) \cdot 5}{5} - \frac{3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Combine the numerators over the common denominator.

$5 (\frac{- 4 - (- \frac{7}{30} + \frac{z}{30}) \cdot 5 - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Simplify each term.

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Apply the distributive property.

$5 (\frac{- 4 + (\frac{7}{30} - \frac{z}{30}) \cdot 5 - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Multiply $- - \frac{7}{30}$ .

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Multiply $- 1$ by $- 1$ .

$5 (\frac{- 4 + (1 (\frac{7}{30}) - \frac{z}{30}) \cdot 5 - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Multiply $\frac{7}{30}$ by $1$ .

$5 (\frac{- 4 + (\frac{7}{30} - \frac{z}{30}) \cdot 5 - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$5 (\frac{- 4 + (\frac{7}{30} - \frac{z}{30}) \cdot 5 - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Apply the distributive property.

$5 (\frac{- 4 + \frac{7}{30} \cdot 5 - \frac{z}{30} \cdot 5 - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Cancel the common factor of $5$ .

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Factor $5$ out of $30$ .

$5 (\frac{- 4 + \frac{7}{5 (6)} \cdot 5 - \frac{z}{30} \cdot 5 - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Cancel the common factor.

$5 (\frac{- 4 + \frac{7}{5 \cdot 6} \cdot 5 - \frac{z}{30} \cdot 5 - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Rewrite the expression.

$5 (\frac{- 4 + \frac{7}{6} - \frac{z}{30} \cdot 5 - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$5 (\frac{- 4 + \frac{7}{6} - \frac{z}{30} \cdot 5 - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Cancel the common factor of $5$ .

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Move the leading negative in $- \frac{z}{30}$ into the numerator.

$5 (\frac{- 4 + \frac{7}{6} + \frac{- z}{30} \cdot 5 - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Factor $5$ out of $30$ .

$5 (\frac{- 4 + \frac{7}{6} + \frac{- z}{5 (6)} \cdot 5 - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Cancel the common factor.

$5 (\frac{- 4 + \frac{7}{6} + \frac{- z}{5 \cdot 6} \cdot 5 - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Rewrite the expression.

$5 (\frac{- 4 + \frac{7}{6} + \frac{- z}{6} - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$5 (\frac{- 4 + \frac{7}{6} + \frac{- z}{6} - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Move the negative in front of the fraction.

$5 (\frac{- 4 + \frac{7}{6} - \frac{z}{6} - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$5 (\frac{- 4 + \frac{7}{6} - \frac{z}{6} - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

To write $- 4$ as a fraction with a common denominator, multiply by $\frac{6}{6}$ .

$5 (\frac{- 4 \cdot \frac{6}{6} + \frac{7}{6} - \frac{z}{6} - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Combine $- 4$ and $\frac{6}{6}$ .

$5 (\frac{\frac{- 4 \cdot 6}{6} + \frac{7}{6} - \frac{z}{6} - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Combine the numerators over the common denominator.

$5 (\frac{\frac{- 4 \cdot 6 + 7}{6} - \frac{z}{6} - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Simplify the numerator.

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Multiply $- 4$ by $6$ .

$5 (\frac{\frac{- 24 + 7}{6} - \frac{z}{6} - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Add $- 24$ and $7$ .

$5 (\frac{\frac{- 17}{6} - \frac{z}{6} - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$5 (\frac{\frac{- 17}{6} - \frac{z}{6} - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Move the negative in front of the fraction.

$5 (\frac{- \frac{17}{6} - \frac{z}{6} - 3 z}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

To write $- 3 z$ as a fraction with a common denominator, multiply by $\frac{6}{6}$ .

$5 (\frac{- \frac{17}{6} - \frac{z}{6} - 3 z \cdot \frac{6}{6}}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Combine $- 3 z$ and $\frac{6}{6}$ .

$5 (\frac{- \frac{17}{6} - \frac{z}{6} + \frac{- 3 z \cdot 6}{6}}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Combine the numerators over the common denominator.

$5 (\frac{- \frac{17}{6} + \frac{- z - 3 z \cdot 6}{6}}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Combine the numerators over the common denominator.

$5 (\frac{\frac{- 17 - z - 3 z \cdot 6}{6}}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Multiply $6$ by $- 3$ .

$5 (\frac{\frac{- 17 - z - 18 z}{6}}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Subtract $18 z$ from $- z$ .

$5 (\frac{\frac{- 17 - 19 z}{6}}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Rewrite $- 17$ as $- 1 (17)$ .

$5 (\frac{\frac{- 1 \cdot 17 - 19 z}{6}}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Factor $- 1$ out of $- 19 z$ .

$5 (\frac{\frac{- 1 \cdot 17 - (19 z)}{6}}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Factor $- 1$ out of $- 1 (17) - (19 z)$ .

$5 (\frac{\frac{- 1 (17 + 19 z)}{6}}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Move the negative in front of the fraction.

$5 (\frac{- \frac{17 + 19 z}{6}}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Cancel the common factor of $5$ .

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Cancel the common factor.

$5 (\frac{- \frac{17 + 19 z}{6}}{5}) + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Rewrite the expression.

$- \frac{17 + 19 z}{6} + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$- \frac{17 + 19 z}{6} + 5 (- \frac{7}{30} + \frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Apply the distributive property.

$- \frac{17 + 19 z}{6} + 5 (- \frac{7}{30}) + 5 (\frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Cancel the common factor of $5$ .

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Move the leading negative in $- \frac{7}{30}$ into the numerator.

$- \frac{17 + 19 z}{6} + 5 (\frac{- 7}{30}) + 5 (\frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Factor $5$ out of $30$ .

$- \frac{17 + 19 z}{6} + 5 (\frac{- 7}{5 (6)}) + 5 (\frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Cancel the common factor.

$- \frac{17 + 19 z}{6} + 5 (\frac{- 7}{5 \cdot 6}) + 5 (\frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Rewrite the expression.

$- \frac{17 + 19 z}{6} + \frac{- 7}{6} + 5 (\frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$- \frac{17 + 19 z}{6} + \frac{- 7}{6} + 5 (\frac{z}{30}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Cancel the common factor of $5$ .

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Factor $5$ out of $30$ .

$- \frac{17 + 19 z}{6} + \frac{- 7}{6} + 5 (\frac{z}{5 (6)}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Cancel the common factor.

$- \frac{17 + 19 z}{6} + \frac{- 7}{6} + 5 (\frac{z}{5 \cdot 6}) + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Rewrite the expression.

$- \frac{17 + 19 z}{6} + \frac{- 7}{6} + \frac{z}{6} + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$- \frac{17 + 19 z}{6} + \frac{- 7}{6} + \frac{z}{6} + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Move the negative in front of the fraction.

$- \frac{17 + 19 z}{6} - \frac{7}{6} + \frac{z}{6} + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$- \frac{17 + 19 z}{6} - \frac{7}{6} + \frac{z}{6} + 3 z = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Combine the numerators over the common denominator.

$3 z + \frac{- (17 + 19 z) - 7 + z}{6} = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Simplify each term.

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Apply the distributive property.

$3 z + \frac{- 1 \cdot 17 - (19 z) - 7 + z}{6} = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Multiply $- 1$ by $17$ .

$3 z + \frac{- 17 - (19 z) - 7 + z}{6} = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Multiply $19$ by $- 1$ .

$3 z + \frac{- 17 - 19 z - 7 + z}{6} = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$3 z + \frac{- 17 - 19 z - 7 + z}{6} = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Simplify terms.

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Subtract $7$ from $- 17$ .

$3 z + \frac{- 19 z - 24 + z}{6} = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Add $- 19 z$ and $z$ .

$3 z + \frac{- 18 z - 24}{6} = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Cancel the common factor of $- 18 z - 24$ and $6$ .

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Factor $6$ out of $- 18 z$ .

$3 z + \frac{6 (- 3 z) - 24}{6} = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Factor $6$ out of $- 24$ .

$3 z + \frac{6 (- 3 z) + 6 \cdot - 4}{6} = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Factor $6$ out of $6 (- 3 z) + 6 (- 4)$ .

$3 z + \frac{6 (- 3 z - 4)}{6} = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Cancel the common factors.

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Factor $6$ out of $6$ .

$3 z + \frac{6 (- 3 z - 4)}{6 (1)} = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Cancel the common factor.

$3 z + \frac{6 (- 3 z - 4)}{6 \cdot 1} = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Rewrite the expression.

$3 z + \frac{- 3 z - 4}{1} = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

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

$3 z - 3 z - 4 = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$3 z - 3 z - 4 = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$3 z - 3 z - 4 = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Subtract $3 z$ from $3 z$ .

$0 - 4 = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Subtract $4$ from $0$ .

$- 4 = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$- 4 = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$- 4 = - 4$

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Since $- 4 = - 4$ , the equation will always be true.

Always true

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Always true

$y = - \frac{7}{30} + \frac{z}{30}$

$h = \frac{k}{z} + 7 + \frac{6}{z}$

Step 5

Simplify the right side.

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Reorder $- \frac{7}{30}$ and $\frac{z}{30}$ .

$y = \frac{z}{30} - \frac{7}{30}$

Always true

$h = \frac{k}{z} + 7 + \frac{6}{z}$

$y = \frac{z}{30} - \frac{7}{30}$

Always true

$h = \frac{k}{z} + 7 + \frac{6}{z}$