Finite Math Examples

$y = 180 - 2 x$

Step 1

Rewrite the equation as $180 - 2 x = y$ .

$180 - 2 x = y$

Step 2

Subtract $180$ from both sides of the equation.

$- 2 x = y - 180$

Step 3

Divide each term in $- 2 x = y - 180$ by $- 2$ and simplify.

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Step 3.1

Divide each term in $- 2 x = y - 180$ by $- 2$ .

$\frac{- 2 x}{- 2} = \frac{y}{- 2} + \frac{- 180}{- 2}$

Step 3.2

Simplify the left side.

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Step 3.2.1

Cancel the common factor of $- 2$ .

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Step 3.2.1.1

Cancel the common factor.

$\frac{- 2 x}{- 2} = \frac{y}{- 2} + \frac{- 180}{- 2}$

Step 3.2.1.2

Divide $x$ by $1$ .

$x = \frac{y}{- 2} + \frac{- 180}{- 2}$

Step 3.3

Simplify the right side.

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Step 3.3.1

Simplify each term.

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Step 3.3.1.1

Move the negative in front of the fraction.

$x = - \frac{y}{2} + \frac{- 180}{- 2}$

Step 3.3.1.2

Divide $- 180$ by $- 2$ .

$x = - \frac{y}{2} + 90$