Pre-Algebra Examples

5 - y = 7

$5 - y = 7$

Step 1

Move all terms not containing

y

$y$ to the right side of the equation.

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Step 1.1

Subtract

5

$5$ from both sides of the equation.

- y = 7 - 5

$- y = 7 - 5$

Step 1.2

Subtract

5

$5$ from

7

$7$ .

- y = 2

$- y = 2$

- y = 2

$- y = 2$

Step 2

Divide each term in

- y = 2

$- y = 2$ by

- 1

$- 1$ and simplify.

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Step 2.1

Divide each term in

- y = 2

$- y = 2$ by

- 1

$- 1$ .

\frac{- y}{- 1} = \frac{2}{- 1}

$\frac{- y}{- 1} = \frac{2}{- 1}$

Step 2.2

Simplify the left side.

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Step 2.2.1

Dividing two negative values results in a positive value.

\frac{y}{1} = \frac{2}{- 1}

$\frac{y}{1} = \frac{2}{- 1}$

Step 2.2.2

Divide

y

$y$ by

1

$1$ .

y = \frac{2}{- 1}

$y = \frac{2}{- 1}$

y = \frac{2}{- 1}

$y = \frac{2}{- 1}$

Step 2.3

Simplify the right side.

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Step 2.3.1

Divide

2

$2$ by

- 1

$- 1$ .

y = - 2

$y = - 2$

y = - 2

$y = - 2$

y = - 2

$y = - 2$

5 - y = 7

$5 - y = 7$

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