Finite Math Examples

$x - 3 y + 4 z = 25$ , $y - z + w = - 12$ , $- 2 x + 3 y - 3 z + 3 w = - 18$ , $3 y - 4 z + w = - 29$

Step 1

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

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Step 1.1

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

$x + 4 z = 25 + 3 y$

$y - z + w = - 12$

$- 2 x + 3 y - 3 z + 3 w = - 18$

$3 y - 4 z + w = - 29$

Step 1.2

Subtract $4 z$ from both sides of the equation.

$x = 25 + 3 y - 4 z$

$y - z + w = - 12$

$- 2 x + 3 y - 3 z + 3 w = - 18$

$3 y - 4 z + w = - 29$

$x = 25 + 3 y - 4 z$

$y - z + w = - 12$

$- 2 x + 3 y - 3 z + 3 w = - 18$

$3 y - 4 z + w = - 29$

Step 2

Replace all occurrences of $x$ with $25 + 3 y - 4 z$ in each equation.

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Step 2.1

Replace all occurrences of $x$ in $- 2 x + 3 y - 3 z + 3 w = - 18$ with $25 + 3 y - 4 z$ .

$- 2 (25 + 3 y - 4 z) + 3 y - 3 z + 3 w = - 18$

$x = 25 + 3 y - 4 z$

$y - z + w = - 12$

$3 y - 4 z + w = - 29$

Step 2.2

Simplify the left side.

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Step 2.2.1

Simplify $- 2 (25 + 3 y - 4 z) + 3 y - 3 z + 3 w$ .

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Step 2.2.1.1

Simplify each term.

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Step 2.2.1.1.1

Apply the distributive property.

$- 2 \cdot 25 - 2 (3 y) - 2 (- 4 z) + 3 y - 3 z + 3 w = - 18$

$x = 25 + 3 y - 4 z$

$y - z + w = - 12$

$3 y - 4 z + w = - 29$

Step 2.2.1.1.2

Simplify.

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Step 2.2.1.1.2.1

Multiply $- 2$ by $25$ .

$- 50 - 2 (3 y) - 2 (- 4 z) + 3 y - 3 z + 3 w = - 18$

$x = 25 + 3 y - 4 z$

$y - z + w = - 12$

$3 y - 4 z + w = - 29$

Step 2.2.1.1.2.2

Multiply $3$ by $- 2$ .

$- 50 - 6 y - 2 (- 4 z) + 3 y - 3 z + 3 w = - 18$

$x = 25 + 3 y - 4 z$

$y - z + w = - 12$

$3 y - 4 z + w = - 29$

Step 2.2.1.1.2.3

Multiply $- 4$ by $- 2$ .

$- 50 - 6 y + 8 z + 3 y - 3 z + 3 w = - 18$

$x = 25 + 3 y - 4 z$

$y - z + w = - 12$

$3 y - 4 z + w = - 29$

$- 50 - 6 y + 8 z + 3 y - 3 z + 3 w = - 18$

$x = 25 + 3 y - 4 z$

$y - z + w = - 12$

$3 y - 4 z + w = - 29$

$- 50 - 6 y + 8 z + 3 y - 3 z + 3 w = - 18$

$x = 25 + 3 y - 4 z$

$y - z + w = - 12$

$3 y - 4 z + w = - 29$

Step 2.2.1.2

Simplify by adding terms.

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Step 2.2.1.2.1

Add $- 6 y$ and $3 y$ .

$- 50 - 3 y + 8 z - 3 z + 3 w = - 18$

$x = 25 + 3 y - 4 z$

$y - z + w = - 12$

$3 y - 4 z + w = - 29$

Step 2.2.1.2.2

Subtract $3 z$ from $8 z$ .

$- 50 - 3 y + 5 z + 3 w = - 18$

$x = 25 + 3 y - 4 z$

$y - z + w = - 12$

$3 y - 4 z + w = - 29$

$- 50 - 3 y + 5 z + 3 w = - 18$

$x = 25 + 3 y - 4 z$

$y - z + w = - 12$

$3 y - 4 z + w = - 29$

$- 50 - 3 y + 5 z + 3 w = - 18$

$x = 25 + 3 y - 4 z$

$y - z + w = - 12$

$3 y - 4 z + w = - 29$

$- 50 - 3 y + 5 z + 3 w = - 18$

$x = 25 + 3 y - 4 z$

$y - z + w = - 12$

$3 y - 4 z + w = - 29$

$- 50 - 3 y + 5 z + 3 w = - 18$

$x = 25 + 3 y - 4 z$

$y - z + w = - 12$

$3 y - 4 z + w = - 29$

Step 3

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

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Step 3.1

Add $z$ to both sides of the equation.

$y + w = - 12 + z$

$- 50 - 3 y + 5 z + 3 w = - 18$

$x = 25 + 3 y - 4 z$

$3 y - 4 z + w = - 29$

Step 3.2

Subtract $w$ from both sides of the equation.

$y = - 12 + z - w$

$- 50 - 3 y + 5 z + 3 w = - 18$

$x = 25 + 3 y - 4 z$

$3 y - 4 z + w = - 29$

$y = - 12 + z - w$

$- 50 - 3 y + 5 z + 3 w = - 18$

$x = 25 + 3 y - 4 z$

$3 y - 4 z + w = - 29$

Step 4

Replace all occurrences of $y$ with $- 12 + z - w$ in each equation.

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Step 4.1

Replace all occurrences of $y$ in $- 50 - 3 y + 5 z + 3 w = - 18$ with $- 12 + z - w$ .

$- 50 - 3 (- 12 + z - w) + 5 z + 3 w = - 18$

$y = - 12 + z - w$

$x = 25 + 3 y - 4 z$

$3 y - 4 z + w = - 29$

Step 4.2

Simplify the left side.

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Step 4.2.1

Simplify $- 50 - 3 (- 12 + z - w) + 5 z + 3 w$ .

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Step 4.2.1.1

Simplify each term.

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Step 4.2.1.1.1

Apply the distributive property.

$- 50 - 3 \cdot - 12 - 3 z - 3 (- w) + 5 z + 3 w = - 18$

$y = - 12 + z - w$

$x = 25 + 3 y - 4 z$

$3 y - 4 z + w = - 29$

Step 4.2.1.1.2

Simplify.

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Step 4.2.1.1.2.1

Multiply $- 3$ by $- 12$ .

$- 50 + 36 - 3 z - 3 (- w) + 5 z + 3 w = - 18$

$y = - 12 + z - w$

$x = 25 + 3 y - 4 z$

$3 y - 4 z + w = - 29$

Step 4.2.1.1.2.2

Multiply $- 1$ by $- 3$ .

$- 50 + 36 - 3 z + 3 w + 5 z + 3 w = - 18$

$y = - 12 + z - w$

$x = 25 + 3 y - 4 z$

$3 y - 4 z + w = - 29$

$- 50 + 36 - 3 z + 3 w + 5 z + 3 w = - 18$

$y = - 12 + z - w$

$x = 25 + 3 y - 4 z$

$3 y - 4 z + w = - 29$

$- 50 + 36 - 3 z + 3 w + 5 z + 3 w = - 18$

$y = - 12 + z - w$

$x = 25 + 3 y - 4 z$

$3 y - 4 z + w = - 29$

Step 4.2.1.2

Simplify by adding terms.

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Step 4.2.1.2.1

Add $- 50$ and $36$ .

$- 14 - 3 z + 3 w + 5 z + 3 w = - 18$

$y = - 12 + z - w$

$x = 25 + 3 y - 4 z$

$3 y - 4 z + w = - 29$

Step 4.2.1.2.2

Add $- 3 z$ and $5 z$ .

$- 14 + 3 w + 2 z + 3 w = - 18$

$y = - 12 + z - w$

$x = 25 + 3 y - 4 z$

$3 y - 4 z + w = - 29$

Step 4.2.1.2.3

Add $3 w$ and $3 w$ .

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$x = 25 + 3 y - 4 z$

$3 y - 4 z + w = - 29$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$x = 25 + 3 y - 4 z$

$3 y - 4 z + w = - 29$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$x = 25 + 3 y - 4 z$

$3 y - 4 z + w = - 29$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$x = 25 + 3 y - 4 z$

$3 y - 4 z + w = - 29$

Step 4.3

Replace all occurrences of $y$ in $x = 25 + 3 y - 4 z$ with $- 12 + z - w$ .

$x = 25 + 3 (- 12 + z - w) - 4 z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$3 y - 4 z + w = - 29$

Step 4.4

Simplify the right side.

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Step 4.4.1

Simplify $25 + 3 (- 12 + z - w) - 4 z$ .

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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.

$x = 25 + 3 \cdot - 12 + 3 z + 3 (- w) - 4 z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$3 y - 4 z + w = - 29$

Step 4.4.1.1.2

Simplify.

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Step 4.4.1.1.2.1

Multiply $3$ by $- 12$ .

$x = 25 - 36 + 3 z + 3 (- w) - 4 z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$3 y - 4 z + w = - 29$

Step 4.4.1.1.2.2

Multiply $- 1$ by $3$ .

$x = 25 - 36 + 3 z - 3 w - 4 z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$3 y - 4 z + w = - 29$

$x = 25 - 36 + 3 z - 3 w - 4 z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$3 y - 4 z + w = - 29$

$x = 25 - 36 + 3 z - 3 w - 4 z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$3 y - 4 z + w = - 29$

Step 4.4.1.2

Simplify by adding terms.

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Step 4.4.1.2.1

Subtract $36$ from $25$ .

$x = - 11 + 3 z - 3 w - 4 z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$3 y - 4 z + w = - 29$

Step 4.4.1.2.2

Subtract $4 z$ from $3 z$ .

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$3 y - 4 z + w = - 29$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$3 y - 4 z + w = - 29$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$3 y - 4 z + w = - 29$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$3 y - 4 z + w = - 29$

Step 4.5

Replace all occurrences of $y$ in $3 y - 4 z + w = - 29$ with $- 12 + z - w$ .

$3 (- 12 + z - w) - 4 z + w = - 29$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 4.6

Simplify the left side.

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Step 4.6.1

Simplify $3 (- 12 + z - w) - 4 z + w$ .

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Step 4.6.1.1

Simplify each term.

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Step 4.6.1.1.1

Apply the distributive property.

$3 \cdot - 12 + 3 z + 3 (- w) - 4 z + w = - 29$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 4.6.1.1.2

Simplify.

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Step 4.6.1.1.2.1

Multiply $3$ by $- 12$ .

$- 36 + 3 z + 3 (- w) - 4 z + w = - 29$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 4.6.1.1.2.2

Multiply $- 1$ by $3$ .

$- 36 + 3 z - 3 w - 4 z + w = - 29$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$- 36 + 3 z - 3 w - 4 z + w = - 29$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$- 36 + 3 z - 3 w - 4 z + w = - 29$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 4.6.1.2

Simplify by adding terms.

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Step 4.6.1.2.1

Subtract $4 z$ from $3 z$ .

$- 36 - 3 w - z + w = - 29$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 4.6.1.2.2

Add $- 3 w$ and $w$ .

$- 36 - 2 w - z = - 29$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$- 36 - 2 w - z = - 29$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$- 36 - 2 w - z = - 29$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$- 36 - 2 w - z = - 29$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$- 36 - 2 w - z = - 29$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 5

Solve for $w$ in $- 36 - 2 w - z = - 29$ .

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Step 5.1

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

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Step 5.1.1

Add $36$ to both sides of the equation.

$- 2 w - z = - 29 + 36$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 5.1.2

Add $z$ to both sides of the equation.

$- 2 w = - 29 + 36 + z$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 5.1.3

Add $- 29$ and $36$ .

$- 2 w = 7 + z$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$- 2 w = 7 + z$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 5.2

Divide each term in $- 2 w = 7 + z$ by $- 2$ and simplify.

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Step 5.2.1

Divide each term in $- 2 w = 7 + z$ by $- 2$ .

$\frac{- 2 w}{- 2} = \frac{7}{- 2} + \frac{z}{- 2}$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 5.2.2

Simplify the left side.

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Step 5.2.2.1

Cancel the common factor of $- 2$ .

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Step 5.2.2.1.1

Cancel the common factor.

$\frac{- 2 w}{- 2} = \frac{7}{- 2} + \frac{z}{- 2}$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 5.2.2.1.2

Divide $w$ by $1$ .

$w = \frac{7}{- 2} + \frac{z}{- 2}$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$w = \frac{7}{- 2} + \frac{z}{- 2}$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$w = \frac{7}{- 2} + \frac{z}{- 2}$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 5.2.3

Simplify the right side.

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Step 5.2.3.1

Simplify each term.

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Step 5.2.3.1.1

Move the negative in front of the fraction.

$w = - \frac{7}{2} + \frac{z}{- 2}$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 5.2.3.1.2

Move the negative in front of the fraction.

$w = - \frac{7}{2} - \frac{z}{2}$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$w = - \frac{7}{2} - \frac{z}{2}$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$w = - \frac{7}{2} - \frac{z}{2}$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$w = - \frac{7}{2} - \frac{z}{2}$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$w = - \frac{7}{2} - \frac{z}{2}$

$x = - 11 - 3 w - z$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6

Replace all occurrences of $w$ with $- \frac{7}{2} - \frac{z}{2}$ in each equation.

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Step 6.1

Replace all occurrences of $w$ in $x = - 11 - 3 w - z$ with $- \frac{7}{2} - \frac{z}{2}$ .

$x = - 11 - 3 (- \frac{7}{2} - \frac{z}{2}) - z$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2

Simplify the right side.

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Step 6.2.1

Simplify $- 11 - 3 (- \frac{7}{2} - \frac{z}{2}) - z$ .

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Step 6.2.1.1

Simplify each term.

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Step 6.2.1.1.1

Apply the distributive property.

$x = - 11 - 3 (- \frac{7}{2}) - 3 (- \frac{z}{2}) - z$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.1.2

Multiply $- 3 (- \frac{7}{2})$ .

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Step 6.2.1.1.2.1

Multiply $- 1$ by $- 3$ .

$x = - 11 + 3 (\frac{7}{2}) - 3 (- \frac{z}{2}) - z$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.1.2.2

Combine $3$ and $\frac{7}{2}$ .

$x = - 11 + \frac{3 \cdot 7}{2} - 3 (- \frac{z}{2}) - z$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.1.2.3

Multiply $3$ by $7$ .

$x = - 11 + \frac{21}{2} - 3 (- \frac{z}{2}) - z$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$x = - 11 + \frac{21}{2} - 3 (- \frac{z}{2}) - z$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.1.3

Multiply $- 3 (- \frac{z}{2})$ .

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Step 6.2.1.1.3.1

Multiply $- 1$ by $- 3$ .

$x = - 11 + \frac{21}{2} + 3 (\frac{z}{2}) - z$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.1.3.2

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

$x = - 11 + \frac{21}{2} + \frac{3 z}{2} - z$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$x = - 11 + \frac{21}{2} + \frac{3 z}{2} - z$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$x = - 11 + \frac{21}{2} + \frac{3 z}{2} - z$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.2

To write $- 11$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$x = - 11 \cdot \frac{2}{2} + \frac{21}{2} + \frac{3 z}{2} - z$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.3

Combine $- 11$ and $\frac{2}{2}$ .

$x = \frac{- 11 \cdot 2}{2} + \frac{21}{2} + \frac{3 z}{2} - z$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.4

Combine the numerators over the common denominator.

$x = \frac{- 11 \cdot 2 + 21}{2} + \frac{3 z}{2} - z$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.5

Simplify the numerator.

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Step 6.2.1.5.1

Multiply $- 11$ by $2$ .

$x = \frac{- 22 + 21}{2} + \frac{3 z}{2} - z$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.5.2

Add $- 22$ and $21$ .

$x = \frac{- 1}{2} + \frac{3 z}{2} - z$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$x = \frac{- 1}{2} + \frac{3 z}{2} - z$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.6

Move the negative in front of the fraction.

$x = - \frac{1}{2} + \frac{3 z}{2} - z$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.7

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

$x = - \frac{1}{2} + \frac{3 z}{2} - z \cdot \frac{2}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.8

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

$x = - \frac{1}{2} + \frac{3 z}{2} + \frac{- z \cdot 2}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.9

Combine the numerators over the common denominator.

$x = - \frac{1}{2} + \frac{3 z - z \cdot 2}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.10

Combine the numerators over the common denominator.

$x = \frac{- 1 + 3 z - z \cdot 2}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.11

Multiply $2$ by $- 1$ .

$x = \frac{- 1 + 3 z - 2 z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.12

Subtract $2 z$ from $3 z$ .

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

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.13

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

$x = \frac{- 1 \cdot 1 + z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.14

Factor $- 1$ out of $z$ .

$x = \frac{- 1 \cdot 1 - 1 (- z)}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.15

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

$x = \frac{- 1 (1 - z)}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.2.1.16

Move the negative in front of the fraction.

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$- 14 + 6 w + 2 z = - 18$

$y = - 12 + z - w$

Step 6.3

Replace all occurrences of $w$ in $- 14 + 6 w + 2 z = - 18$ with $- \frac{7}{2} - \frac{z}{2}$ .

$- 14 + 6 (- \frac{7}{2} - \frac{z}{2}) + 2 z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

Step 6.4

Simplify the left side.

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Step 6.4.1

Simplify $- 14 + 6 (- \frac{7}{2} - \frac{z}{2}) + 2 z$ .

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Step 6.4.1.1

Simplify each term.

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Step 6.4.1.1.1

Apply the distributive property.

$- 14 + 6 (- \frac{7}{2}) + 6 (- \frac{z}{2}) + 2 z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

Step 6.4.1.1.2

Cancel the common factor of $2$ .

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Step 6.4.1.1.2.1

Move the leading negative in $- \frac{7}{2}$ into the numerator.

$- 14 + 6 (\frac{- 7}{2}) + 6 (- \frac{z}{2}) + 2 z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

Step 6.4.1.1.2.2

Factor $2$ out of $6$ .

$- 14 + 2 (3) (\frac{- 7}{2}) + 6 (- \frac{z}{2}) + 2 z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

Step 6.4.1.1.2.3

Cancel the common factor.

$- 14 + 2 \cdot (3 (\frac{- 7}{2})) + 6 (- \frac{z}{2}) + 2 z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

Step 6.4.1.1.2.4

Rewrite the expression.

$- 14 + 3 \cdot - 7 + 6 (- \frac{z}{2}) + 2 z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

$- 14 + 3 \cdot - 7 + 6 (- \frac{z}{2}) + 2 z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

Step 6.4.1.1.3

Multiply $3$ by $- 7$ .

$- 14 - 21 + 6 (- \frac{z}{2}) + 2 z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

Step 6.4.1.1.4

Cancel the common factor of $2$ .

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Step 6.4.1.1.4.1

Move the leading negative in $- \frac{z}{2}$ into the numerator.

$- 14 - 21 + 6 (\frac{- z}{2}) + 2 z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

Step 6.4.1.1.4.2

Factor $2$ out of $6$ .

$- 14 - 21 + 2 (3) (\frac{- z}{2}) + 2 z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

Step 6.4.1.1.4.3

Cancel the common factor.

$- 14 - 21 + 2 \cdot (3 (\frac{- z}{2})) + 2 z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

Step 6.4.1.1.4.4

Rewrite the expression.

$- 14 - 21 + 3 (- z) + 2 z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

$- 14 - 21 + 3 (- z) + 2 z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

Step 6.4.1.1.5

Multiply $- 1$ by $3$ .

$- 14 - 21 - 3 z + 2 z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

$- 14 - 21 - 3 z + 2 z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

Step 6.4.1.2

Simplify by adding terms.

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Step 6.4.1.2.1

Subtract $21$ from $- 14$ .

$- 35 - 3 z + 2 z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

Step 6.4.1.2.2

Add $- 3 z$ and $2 z$ .

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z - w$

Step 6.5

Replace all occurrences of $w$ in $y = - 12 + z - w$ with $- \frac{7}{2} - \frac{z}{2}$ .

$y = - 12 + z - (- \frac{7}{2} - \frac{z}{2})$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 6.6

Simplify the right side.

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Step 6.6.1

Simplify $- 12 + z - (- \frac{7}{2} - \frac{z}{2})$ .

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Step 6.6.1.1

Simplify each term.

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Step 6.6.1.1.1

Apply the distributive property.

$y = - 12 + z + \frac{7}{2} + \frac{z}{2}$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 6.6.1.1.2

Multiply $- - \frac{7}{2}$ .

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Step 6.6.1.1.2.1

Multiply $- 1$ by $- 1$ .

$y = - 12 + z + 1 (\frac{7}{2}) + \frac{z}{2}$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 6.6.1.1.2.2

Multiply $\frac{7}{2}$ by $1$ .

$y = - 12 + z + \frac{7}{2} + \frac{z}{2}$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z + \frac{7}{2} + \frac{z}{2}$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 6.6.1.1.3

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

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Step 6.6.1.1.3.1

Multiply $- 1$ by $- 1$ .

$y = - 12 + z + \frac{7}{2} + 1 (\frac{z}{2})$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 6.6.1.1.3.2

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

$y = - 12 + z + \frac{7}{2} + \frac{z}{2}$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z + \frac{7}{2} + \frac{z}{2}$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 12 + z + \frac{7}{2} + \frac{z}{2}$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 6.6.1.2

To write $- 12$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$y = z - 12 \cdot \frac{2}{2} + \frac{7}{2} + \frac{z}{2}$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 6.6.1.3

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

$y = z + \frac{- 12 \cdot 2}{2} + \frac{7}{2} + \frac{z}{2}$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 6.6.1.4

Combine the numerators over the common denominator.

$y = z + \frac{- 12 \cdot 2 + 7}{2} + \frac{z}{2}$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 6.6.1.5

Simplify the numerator.

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Step 6.6.1.5.1

Multiply $- 12$ by $2$ .

$y = z + \frac{- 24 + 7}{2} + \frac{z}{2}$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 6.6.1.5.2

Add $- 24$ and $7$ .

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

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

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

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 6.6.1.6

Move the negative in front of the fraction.

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

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 6.6.1.7

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

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

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 6.6.1.8

Simplify terms.

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Step 6.6.1.8.1

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

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

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 6.6.1.8.2

Combine the numerators over the common denominator.

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

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 6.6.1.8.3

Combine the numerators over the common denominator.

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

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

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

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 6.6.1.9

Move $2$ to the left of $z$ .

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

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 6.6.1.10

Add $2 z$ and $z$ .

$y = \frac{3 z - 17}{2}$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = \frac{3 z - 17}{2}$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = \frac{3 z - 17}{2}$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = \frac{3 z - 17}{2}$

$- 35 - z = - 18$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 7

Solve for $z$ in $- 35 - z = - 18$ .

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Step 7.1

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

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Step 7.1.1

Add $35$ to both sides of the equation.

$- z = - 18 + 35$

$y = \frac{3 z - 17}{2}$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 7.1.2

Add $- 18$ and $35$ .

$- z = 17$

$y = \frac{3 z - 17}{2}$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$- z = 17$

$y = \frac{3 z - 17}{2}$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 7.2

Divide each term in $- z = 17$ by $- 1$ and simplify.

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Step 7.2.1

Divide each term in $- z = 17$ by $- 1$ .

$\frac{- z}{- 1} = \frac{17}{- 1}$

$y = \frac{3 z - 17}{2}$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 7.2.2

Simplify the left side.

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Step 7.2.2.1

Dividing two negative values results in a positive value.

$\frac{z}{1} = \frac{17}{- 1}$

$y = \frac{3 z - 17}{2}$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 7.2.2.2

Divide $z$ by $1$ .

$z = \frac{17}{- 1}$

$y = \frac{3 z - 17}{2}$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$z = \frac{17}{- 1}$

$y = \frac{3 z - 17}{2}$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 7.2.3

Simplify the right side.

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Step 7.2.3.1

Divide $17$ by $- 1$ .

$z = - 17$

$y = \frac{3 z - 17}{2}$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$z = - 17$

$y = \frac{3 z - 17}{2}$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$z = - 17$

$y = \frac{3 z - 17}{2}$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$z = - 17$

$y = \frac{3 z - 17}{2}$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 8

Replace all occurrences of $z$ with $- 17$ in each equation.

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Step 8.1

Replace all occurrences of $z$ in $y = \frac{3 z - 17}{2}$ with $- 17$ .

$y = \frac{3 (- 17) - 17}{2}$

$z = - 17$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 8.2

Simplify the right side.

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Step 8.2.1

Simplify $\frac{3 (- 17) - 17}{2}$ .

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Step 8.2.1.1

Simplify the numerator.

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Step 8.2.1.1.1

Multiply $3$ by $- 17$ .

$y = \frac{- 51 - 17}{2}$

$z = - 17$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 8.2.1.1.2

Subtract $17$ from $- 51$ .

$y = \frac{- 68}{2}$

$z = - 17$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = \frac{- 68}{2}$

$z = - 17$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 8.2.1.2

Divide $- 68$ by $2$ .

$y = - 34$

$z = - 17$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 34$

$z = - 17$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

$y = - 34$

$z = - 17$

$x = - \frac{1 - z}{2}$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 8.3

Replace all occurrences of $z$ in $x = - \frac{1 - z}{2}$ with $- 17$ .

$x = - \frac{1 - (- 17)}{2}$

$y = - 34$

$z = - 17$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 8.4

Simplify the right side.

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Step 8.4.1

Simplify $- \frac{1 - (- 17)}{2}$ .

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Step 8.4.1.1

Simplify the numerator.

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Step 8.4.1.1.1

Multiply $- 1$ by $- 17$ .

$x = - \frac{1 + 17}{2}$

$y = - 34$

$z = - 17$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 8.4.1.1.2

Add $1$ and $17$ .

$x = - \frac{18}{2}$

$y = - 34$

$z = - 17$

$w = - \frac{7}{2} - \frac{z}{2}$

$x = - \frac{18}{2}$

$y = - 34$

$z = - 17$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 8.4.1.2

Simplify the expression.

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Step 8.4.1.2.1

Divide $18$ by $2$ .

$x = - 1 \cdot 9$

$y = - 34$

$z = - 17$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 8.4.1.2.2

Multiply $- 1$ by $9$ .

$x = - 9$

$y = - 34$

$z = - 17$

$w = - \frac{7}{2} - \frac{z}{2}$

$x = - 9$

$y = - 34$

$z = - 17$

$w = - \frac{7}{2} - \frac{z}{2}$

$x = - 9$

$y = - 34$

$z = - 17$

$w = - \frac{7}{2} - \frac{z}{2}$

$x = - 9$

$y = - 34$

$z = - 17$

$w = - \frac{7}{2} - \frac{z}{2}$

Step 8.5

Replace all occurrences of $z$ in $w = - \frac{7}{2} - \frac{z}{2}$ with $- 17$ .

$w = - \frac{7}{2} - \frac{- 17}{2}$

$x = - 9$

$y = - 34$

$z = - 17$

Step 8.6

Simplify the right side.

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Step 8.6.1

Simplify $- \frac{7}{2} - \frac{- 17}{2}$ .

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Step 8.6.1.1

Combine the numerators over the common denominator.

$w = \frac{- 7 + 17}{2}$

$x = - 9$

$y = - 34$

$z = - 17$

Step 8.6.1.2

Simplify the expression.

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Step 8.6.1.2.1

Add $- 7$ and $17$ .

$w = \frac{10}{2}$

$x = - 9$

$y = - 34$

$z = - 17$

Step 8.6.1.2.2

Divide $10$ by $2$ .

$w = 5$

$x = - 9$

$y = - 34$

$z = - 17$

$w = 5$

$x = - 9$

$y = - 34$

$z = - 17$

$w = 5$

$x = - 9$

$y = - 34$

$z = - 17$

$w = 5$

$x = - 9$

$y = - 34$

$z = - 17$

$w = 5$

$x = - 9$

$y = - 34$

$z = - 17$

Step 9

List all of the solutions.

$w = 5, x = - 9, y = - 34, z = - 17$