Finite Math Examples

$x + 7 y = z + 13$ , $x = 5 + y - z$ , $x + y + 4 z = 21$

Step 1

Subtract $7 y$ from both sides of the equation.

$x = z + 13 - 7 y$

$x = 5 + y - z$

$x + y + 4 z = 21$

Step 2

Replace all occurrences of $x$ with $z + 13 - 7 y$ in each equation.

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Step 2.1

Replace all occurrences of $x$ in $x = 5 + y - z$ with $z + 13 - 7 y$ .

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

$x + y + 4 z = 21$

Step 2.2

Simplify the left side.

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Step 2.2.1

Remove parentheses.

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

$x + y + 4 z = 21$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

$x + y + 4 z = 21$

Step 2.3

Replace all occurrences of $x$ in $x + y + 4 z = 21$ with $z + 13 - 7 y$ .

$(z + 13 - 7 y) + y + 4 z = 21$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

Step 2.4

Simplify the left side.

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Step 2.4.1

Simplify $(z + 13 - 7 y) + y + 4 z$ .

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Step 2.4.1.1

Add $z$ and $4 z$ .

$(13 - 7 y) + y + 5 z = 21$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

Step 2.4.1.2

Add $- 7 y$ and $y$ .

$13 - 6 y + 5 z = 21$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

$13 - 6 y + 5 z = 21$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

$13 - 6 y + 5 z = 21$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

$13 - 6 y + 5 z = 21$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

Step 3

Solve for $y$ in $13 - 6 y + 5 z = 21$ .

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Step 3.1

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

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Step 3.1.1

Subtract $13$ from both sides of the equation.

$- 6 y + 5 z = 21 - 13$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

Step 3.1.2

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

$- 6 y = 21 - 13 - 5 z$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

Step 3.1.3

Subtract $13$ from $21$ .

$- 6 y = 8 - 5 z$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

$- 6 y = 8 - 5 z$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

Step 3.2

Divide each term in $- 6 y = 8 - 5 z$ by $- 6$ and simplify.

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Step 3.2.1

Divide each term in $- 6 y = 8 - 5 z$ by $- 6$ .

$\frac{- 6 y}{- 6} = \frac{8}{- 6} + \frac{- 5 z}{- 6}$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

Step 3.2.2

Simplify the left side.

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Step 3.2.2.1

Cancel the common factor of $- 6$ .

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Step 3.2.2.1.1

Cancel the common factor.

$\frac{- 6 y}{- 6} = \frac{8}{- 6} + \frac{- 5 z}{- 6}$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

Step 3.2.2.1.2

Divide $y$ by $1$ .

$y = \frac{8}{- 6} + \frac{- 5 z}{- 6}$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

$y = \frac{8}{- 6} + \frac{- 5 z}{- 6}$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

$y = \frac{8}{- 6} + \frac{- 5 z}{- 6}$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

Step 3.2.3

Simplify the right side.

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Step 3.2.3.1

Simplify each term.

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Step 3.2.3.1.1

Cancel the common factor of $8$ and $- 6$ .

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Step 3.2.3.1.1.1

Factor $2$ out of $8$ .

$y = \frac{2 (4)}{- 6} + \frac{- 5 z}{- 6}$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

Step 3.2.3.1.1.2

Cancel the common factors.

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Step 3.2.3.1.1.2.1

Factor $2$ out of $- 6$ .

$y = \frac{2 \cdot 4}{2 \cdot - 3} + \frac{- 5 z}{- 6}$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

Step 3.2.3.1.1.2.2

Cancel the common factor.

$y = \frac{2 \cdot 4}{2 \cdot - 3} + \frac{- 5 z}{- 6}$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

Step 3.2.3.1.1.2.3

Rewrite the expression.

$y = \frac{4}{- 3} + \frac{- 5 z}{- 6}$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

$y = \frac{4}{- 3} + \frac{- 5 z}{- 6}$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

$y = \frac{4}{- 3} + \frac{- 5 z}{- 6}$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

Step 3.2.3.1.2

Move the negative in front of the fraction.

$y = - \frac{4}{3} + \frac{- 5 z}{- 6}$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

Step 3.2.3.1.3

Dividing two negative values results in a positive value.

$y = - \frac{4}{3} + \frac{5 z}{6}$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$z + 13 - 7 y = 5 + y - z$

$x = z + 13 - 7 y$

Step 4

Replace all occurrences of $y$ with $- \frac{4}{3} + \frac{5 z}{6}$ in each equation.

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Step 4.1

Replace all occurrences of $y$ in $z + 13 - 7 y = 5 + y - z$ with $- \frac{4}{3} + \frac{5 z}{6}$ .

$z + 13 - 7 (- \frac{4}{3} + \frac{5 z}{6}) = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2

Simplify $z + 13 - 7 (- \frac{4}{3} + \frac{5 z}{6}) = 5 - \frac{4}{3} + \frac{5 z}{6} - z$ .

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Step 4.2.1

Simplify the left side.

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Step 4.2.1.1

Simplify $z + 13 - 7 (- \frac{4}{3} + \frac{5 z}{6})$ .

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Step 4.2.1.1.1

Remove parentheses.

$z + 13 - 7 (- \frac{4}{3} + \frac{5 z}{6}) = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.2

Simplify each term.

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Step 4.2.1.1.2.1

Apply the distributive property.

$z + 13 - 7 (- \frac{4}{3}) - 7 \frac{5 z}{6} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.2.2

Multiply $- 7 (- \frac{4}{3})$ .

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Step 4.2.1.1.2.2.1

Multiply $- 1$ by $- 7$ .

$z + 13 + 7 (\frac{4}{3}) - 7 \frac{5 z}{6} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.2.2.2

Combine $7$ and $\frac{4}{3}$ .

$z + 13 + \frac{7 \cdot 4}{3} - 7 \frac{5 z}{6} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.2.2.3

Multiply $7$ by $4$ .

$z + 13 + \frac{28}{3} - 7 \frac{5 z}{6} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

$z + 13 + \frac{28}{3} - 7 \frac{5 z}{6} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.2.3

Multiply $- 7 \frac{5 z}{6}$ .

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Step 4.2.1.1.2.3.1

Combine $- 7$ and $\frac{5 z}{6}$ .

$z + 13 + \frac{28}{3} + \frac{- 7 (5 z)}{6} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.2.3.2

Multiply $5$ by $- 7$ .

$z + 13 + \frac{28}{3} + \frac{- 35 z}{6} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

$z + 13 + \frac{28}{3} + \frac{- 35 z}{6} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.2.4

Move the negative in front of the fraction.

$z + 13 + \frac{28}{3} - \frac{35 z}{6} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

$z + 13 + \frac{28}{3} - \frac{35 z}{6} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.3

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

$z \cdot \frac{6}{6} - \frac{35 z}{6} + 13 + \frac{28}{3} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.4

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

$\frac{z \cdot 6}{6} - \frac{35 z}{6} + 13 + \frac{28}{3} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.5

Combine the numerators over the common denominator.

$\frac{z \cdot 6 - 35 z}{6} + 13 + \frac{28}{3} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.6

Subtract $35 z$ from $z \cdot 6$ .

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Step 4.2.1.1.6.1

Reorder $z$ and $6$ .

$\frac{6 \cdot z - 35 z}{6} + 13 + \frac{28}{3} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.6.2

Subtract $35 z$ from $6 \cdot z$ .

$\frac{- 29 \cdot z}{6} + 13 + \frac{28}{3} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

$\frac{- 29 \cdot z}{6} + 13 + \frac{28}{3} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.7

Move the negative in front of the fraction.

$- \frac{29 z}{6} + 13 + \frac{28}{3} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.8

To write $13$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$- \frac{29 z}{6} + 13 \cdot \frac{3}{3} + \frac{28}{3} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.9

Combine $13$ and $\frac{3}{3}$ .

$- \frac{29 z}{6} + \frac{13 \cdot 3}{3} + \frac{28}{3} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.10

Combine the numerators over the common denominator.

$- \frac{29 z}{6} + \frac{13 \cdot 3 + 28}{3} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.11

Simplify the numerator.

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Step 4.2.1.1.11.1

Multiply $13$ by $3$ .

$- \frac{29 z}{6} + \frac{39 + 28}{3} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.1.1.11.2

Add $39$ and $28$ .

$- \frac{29 z}{6} + \frac{67}{3} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

$- \frac{29 z}{6} + \frac{67}{3} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

$- \frac{29 z}{6} + \frac{67}{3} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

$- \frac{29 z}{6} + \frac{67}{3} = 5 - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.2

Simplify the right side.

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Step 4.2.2.1

Simplify $5 - \frac{4}{3} + \frac{5 z}{6} - z$ .

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Step 4.2.2.1.1

To write $5$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$- \frac{29 z}{6} + \frac{67}{3} = 5 \cdot \frac{3}{3} - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.2.1.2

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

$- \frac{29 z}{6} + \frac{67}{3} = \frac{5 \cdot 3}{3} - \frac{4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.2.1.3

Combine the numerators over the common denominator.

$- \frac{29 z}{6} + \frac{67}{3} = \frac{5 \cdot 3 - 4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.2.1.4

Simplify the numerator.

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Step 4.2.2.1.4.1

Multiply $5$ by $3$ .

$- \frac{29 z}{6} + \frac{67}{3} = \frac{15 - 4}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.2.1.4.2

Subtract $4$ from $15$ .

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} + \frac{5 z}{6} - z$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.2.1.5

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

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} + \frac{5 z}{6} - z \cdot \frac{6}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.2.1.6

Simplify terms.

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Step 4.2.2.1.6.1

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

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} + \frac{5 z}{6} + \frac{- z \cdot 6}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.2.1.6.2

Combine the numerators over the common denominator.

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} + \frac{5 z - z \cdot 6}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} + \frac{5 z - z \cdot 6}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.2.1.7

Simplify each term.

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Step 4.2.2.1.7.1

Simplify the numerator.

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Step 4.2.2.1.7.1.1

Factor $z$ out of $5 z - z \cdot 6$ .

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Step 4.2.2.1.7.1.1.1

Factor $z$ out of $5 z$ .

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} + \frac{z \cdot 5 - z \cdot 6}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.2.1.7.1.1.2

Factor $z$ out of $- z \cdot 6$ .

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} + \frac{z \cdot 5 + z (- 1 \cdot 6)}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.2.1.7.1.1.3

Factor $z$ out of $z \cdot 5 + z (- 1 \cdot 6)$ .

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} + \frac{z (5 - 1 \cdot 6)}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} + \frac{z (5 - 1 \cdot 6)}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.2.1.7.1.2

Multiply $- 1$ by $6$ .

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} + \frac{z (5 - 6)}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.2.1.7.1.3

Subtract $6$ from $5$ .

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} + \frac{z \cdot - 1}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} + \frac{z \cdot - 1}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.2.1.7.2

Move $- 1$ to the left of $z$ .

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} + \frac{- 1 \cdot z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.2.2.1.7.3

Move the negative in front of the fraction.

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 - 7 y$

Step 4.3

Replace all occurrences of $y$ in $x = z + 13 - 7 y$ with $- \frac{4}{3} + \frac{5 z}{6}$ .

$x = z + 13 - 7 (- \frac{4}{3} + \frac{5 z}{6})$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4

Simplify the right side.

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Step 4.4.1

Simplify $z + 13 - 7 (- \frac{4}{3} + \frac{5 z}{6})$ .

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Step 4.4.1.1

Simplify each term.

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Step 4.4.1.1.1

Apply the distributive property.

$x = z + 13 - 7 (- \frac{4}{3}) - 7 \frac{5 z}{6}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4.1.1.2

Multiply $- 7 (- \frac{4}{3})$ .

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Step 4.4.1.1.2.1

Multiply $- 1$ by $- 7$ .

$x = z + 13 + 7 (\frac{4}{3}) - 7 \frac{5 z}{6}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4.1.1.2.2

Combine $7$ and $\frac{4}{3}$ .

$x = z + 13 + \frac{7 \cdot 4}{3} - 7 \frac{5 z}{6}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4.1.1.2.3

Multiply $7$ by $4$ .

$x = z + 13 + \frac{28}{3} - 7 \frac{5 z}{6}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 + \frac{28}{3} - 7 \frac{5 z}{6}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4.1.1.3

Multiply $- 7 \frac{5 z}{6}$ .

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Step 4.4.1.1.3.1

Combine $- 7$ and $\frac{5 z}{6}$ .

$x = z + 13 + \frac{28}{3} + \frac{- 7 (5 z)}{6}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4.1.1.3.2

Multiply $5$ by $- 7$ .

$x = z + 13 + \frac{28}{3} + \frac{- 35 z}{6}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 + \frac{28}{3} + \frac{- 35 z}{6}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4.1.1.4

Move the negative in front of the fraction.

$x = z + 13 + \frac{28}{3} - \frac{35 z}{6}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = z + 13 + \frac{28}{3} - \frac{35 z}{6}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4.1.2

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

$x = z \cdot \frac{6}{6} - \frac{35 z}{6} + 13 + \frac{28}{3}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4.1.3

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

$x = \frac{z \cdot 6}{6} - \frac{35 z}{6} + 13 + \frac{28}{3}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4.1.4

Combine the numerators over the common denominator.

$x = \frac{z \cdot 6 - 35 z}{6} + 13 + \frac{28}{3}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4.1.5

Subtract $35 z$ from $z \cdot 6$ .

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Step 4.4.1.5.1

Reorder $z$ and $6$ .

$x = \frac{6 \cdot z - 35 z}{6} + 13 + \frac{28}{3}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4.1.5.2

Subtract $35 z$ from $6 \cdot z$ .

$x = \frac{- 29 \cdot z}{6} + 13 + \frac{28}{3}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = \frac{- 29 \cdot z}{6} + 13 + \frac{28}{3}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4.1.6

Move the negative in front of the fraction.

$x = - \frac{29 z}{6} + 13 + \frac{28}{3}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4.1.7

To write $13$ as a fraction with a common denominator, multiply by $\frac{3}{3}$ .

$x = - \frac{29 z}{6} + 13 \cdot \frac{3}{3} + \frac{28}{3}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4.1.8

Combine $13$ and $\frac{3}{3}$ .

$x = - \frac{29 z}{6} + \frac{13 \cdot 3}{3} + \frac{28}{3}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4.1.9

Combine the numerators over the common denominator.

$x = - \frac{29 z}{6} + \frac{13 \cdot 3 + 28}{3}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4.1.10

Simplify the numerator.

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Step 4.4.1.10.1

Multiply $13$ by $3$ .

$x = - \frac{29 z}{6} + \frac{39 + 28}{3}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 4.4.1.10.2

Add $39$ and $28$ .

$x = - \frac{29 z}{6} + \frac{67}{3}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 5

Solve for $z$ in $- \frac{29 z}{6} + \frac{67}{3} = \frac{11}{3} - \frac{z}{6}$ .

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Step 5.1

Move all terms containing $z$ to the left side of the equation.

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Step 5.1.1

Add $\frac{z}{6}$ to both sides of the equation.

$- \frac{29 z}{6} + \frac{67}{3} + \frac{z}{6} = \frac{11}{3}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 5.1.2

Combine the numerators over the common denominator.

$\frac{- 29 z + z}{6} + \frac{67}{3} = \frac{11}{3}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 5.1.3

Add $- 29 z$ and $z$ .

$\frac{- 28 z}{6} + \frac{67}{3} = \frac{11}{3}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 5.1.4

Simplify each term.

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Step 5.1.4.1

Cancel the common factor of $- 28$ and $6$ .

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Step 5.1.4.1.1

Factor $2$ out of $- 28 z$ .

$\frac{2 (- 14 z)}{6} + \frac{67}{3} = \frac{11}{3}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 5.1.4.1.2

Cancel the common factors.

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Step 5.1.4.1.2.1

Factor $2$ out of $6$ .

$\frac{2 (- 14 z)}{2 (3)} + \frac{67}{3} = \frac{11}{3}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 5.1.4.1.2.2

Cancel the common factor.

$\frac{2 (- 14 z)}{2 \cdot 3} + \frac{67}{3} = \frac{11}{3}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 5.1.4.1.2.3

Rewrite the expression.

$\frac{- 14 z}{3} + \frac{67}{3} = \frac{11}{3}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$\frac{- 14 z}{3} + \frac{67}{3} = \frac{11}{3}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$\frac{- 14 z}{3} + \frac{67}{3} = \frac{11}{3}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 5.1.4.2

Move the negative in front of the fraction.

$- \frac{14 z}{3} + \frac{67}{3} = \frac{11}{3}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$- \frac{14 z}{3} + \frac{67}{3} = \frac{11}{3}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$- \frac{14 z}{3} + \frac{67}{3} = \frac{11}{3}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 5.2

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

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Step 5.2.1

Subtract $\frac{67}{3}$ from both sides of the equation.

$- \frac{14 z}{3} = \frac{11}{3} - \frac{67}{3}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 5.2.2

Combine the numerators over the common denominator.

$- \frac{14 z}{3} = \frac{11 - 67}{3}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 5.2.3

Subtract $67$ from $11$ .

$- \frac{14 z}{3} = \frac{- 56}{3}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 5.2.4

Move the negative in front of the fraction.

$- \frac{14 z}{3} = - \frac{56}{3}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$- \frac{14 z}{3} = - \frac{56}{3}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 5.3

Since the expression on each side of the equation has the same denominator, the numerators must be equal.

$- 14 z = - 56$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 5.4

Divide each term in $- 14 z = - 56$ by $- 14$ and simplify.

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Step 5.4.1

Divide each term in $- 14 z = - 56$ by $- 14$ .

$\frac{- 14 z}{- 14} = \frac{- 56}{- 14}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 5.4.2

Simplify the left side.

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Step 5.4.2.1

Cancel the common factor of $- 14$ .

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Step 5.4.2.1.1

Cancel the common factor.

$\frac{- 14 z}{- 14} = \frac{- 56}{- 14}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 5.4.2.1.2

Divide $z$ by $1$ .

$z = \frac{- 56}{- 14}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$z = \frac{- 56}{- 14}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$z = \frac{- 56}{- 14}$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 5.4.3

Simplify the right side.

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Step 5.4.3.1

Divide $- 56$ by $- 14$ .

$z = 4$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$z = 4$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$z = 4$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$z = 4$

$x = - \frac{29 z}{6} + \frac{67}{3}$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 6

Replace all occurrences of $z$ with $4$ in each equation.

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Step 6.1

Replace all occurrences of $z$ in $x = - \frac{29 z}{6} + \frac{67}{3}$ with $4$ .

$x = - \frac{29 (4)}{6} + \frac{67}{3}$

$z = 4$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 6.2

Simplify the right side.

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Step 6.2.1

Simplify $- \frac{29 (4)}{6} + \frac{67}{3}$ .

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Step 6.2.1.1

Simplify each term.

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Step 6.2.1.1.1

Cancel the common factor of $4$ and $6$ .

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Step 6.2.1.1.1.1

Factor $2$ out of $29 (4)$ .

$x = - \frac{2 (29 \cdot (2))}{6} + \frac{67}{3}$

$z = 4$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 6.2.1.1.1.2

Cancel the common factors.

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Step 6.2.1.1.1.2.1

Factor $2$ out of $6$ .

$x = - \frac{2 (29 \cdot (2))}{2 (3)} + \frac{67}{3}$

$z = 4$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 6.2.1.1.1.2.2

Cancel the common factor.

$x = - \frac{2 (29 \cdot (2))}{2 \cdot 3} + \frac{67}{3}$

$z = 4$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 6.2.1.1.1.2.3

Rewrite the expression.

$x = - \frac{29 \cdot (2)}{3} + \frac{67}{3}$

$z = 4$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = - \frac{29 \cdot (2)}{3} + \frac{67}{3}$

$z = 4$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = - \frac{29 \cdot (2)}{3} + \frac{67}{3}$

$z = 4$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 6.2.1.1.2

Multiply $29$ by $2$ .

$x = - \frac{58}{3} + \frac{67}{3}$

$z = 4$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = - \frac{58}{3} + \frac{67}{3}$

$z = 4$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 6.2.1.2

Combine fractions.

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Step 6.2.1.2.1

Combine the numerators over the common denominator.

$x = \frac{- 58 + 67}{3}$

$z = 4$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 6.2.1.2.2

Simplify the expression.

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Step 6.2.1.2.2.1

Add $- 58$ and $67$ .

$x = \frac{9}{3}$

$z = 4$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 6.2.1.2.2.2

Divide $9$ by $3$ .

$x = 3$

$z = 4$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = 3$

$z = 4$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = 3$

$z = 4$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = 3$

$z = 4$

$y = - \frac{4}{3} + \frac{5 z}{6}$

$x = 3$

$z = 4$

$y = - \frac{4}{3} + \frac{5 z}{6}$

Step 6.3

Replace all occurrences of $z$ in $y = - \frac{4}{3} + \frac{5 z}{6}$ with $4$ .

$y = - \frac{4}{3} + \frac{5 (4)}{6}$

$x = 3$

$z = 4$

Step 6.4

Simplify the right side.

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Step 6.4.1

Simplify $- \frac{4}{3} + \frac{5 (4)}{6}$ .

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Step 6.4.1.1

Multiply $5$ by $4$ .

$y = - \frac{4}{3} + \frac{20}{6}$

$x = 3$

$z = 4$

Step 6.4.1.2

Cancel the common factor of $20$ and $6$ .

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Step 6.4.1.2.1

Factor $2$ out of $20$ .

$y = - \frac{4}{3} + \frac{2 (10)}{6}$

$x = 3$

$z = 4$

Step 6.4.1.2.2

Cancel the common factors.

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Step 6.4.1.2.2.1

Factor $2$ out of $6$ .

$y = - \frac{4}{3} + \frac{2 \cdot 10}{2 \cdot 3}$

$x = 3$

$z = 4$

Step 6.4.1.2.2.2

Cancel the common factor.

$y = - \frac{4}{3} + \frac{2 \cdot 10}{2 \cdot 3}$

$x = 3$

$z = 4$

Step 6.4.1.2.2.3

Rewrite the expression.

$y = - \frac{4}{3} + \frac{10}{3}$

$x = 3$

$z = 4$

$y = - \frac{4}{3} + \frac{10}{3}$

$x = 3$

$z = 4$

$y = - \frac{4}{3} + \frac{10}{3}$

$x = 3$

$z = 4$

Step 6.4.1.3

Combine the numerators over the common denominator.

$y = \frac{- 4 + 10}{3}$

$x = 3$

$z = 4$

Step 6.4.1.4

Simplify the expression.

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Step 6.4.1.4.1

Add $- 4$ and $10$ .

$y = \frac{6}{3}$

$x = 3$

$z = 4$

Step 6.4.1.4.2

Divide $6$ by $3$ .

$y = 2$

$x = 3$

$z = 4$

$y = 2$

$x = 3$

$z = 4$

$y = 2$

$x = 3$

$z = 4$

$y = 2$

$x = 3$

$z = 4$

$y = 2$

$x = 3$

$z = 4$

Step 7

The solution to the system is the complete set of ordered pairs that are valid solutions.

$(3, 2, 4)$

Step 8

The result can be shown in multiple forms.

Point Form:

$(3, 2, 4)$

Equation Form:

$x = 3, y = 2, z = 4$