Basic Math Examples

15 - b = 45

$15 - b = 45$

Step 1

Move all terms not containing

b

$b$ to the right side of the equation.

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Step 1.1

Subtract

15

$15$ from both sides of the equation.

- b = 45 - 15

$- b = 45 - 15$

Step 1.2

Subtract

15

$15$ from

45

$45$ .

- b = 30

$- b = 30$

- b = 30

$- b = 30$

Step 2

Divide each term in

- b = 30

$- b = 30$ by

- 1

$- 1$ and simplify.

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Step 2.1

Divide each term in

- b = 30

$- b = 30$ by

- 1

$- 1$ .

\frac{- b}{- 1} = \frac{30}{- 1}

$\frac{- b}{- 1} = \frac{30}{- 1}$

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{b}{1} = \frac{30}{- 1}

$\frac{b}{1} = \frac{30}{- 1}$

Step 2.2.2

Divide

b

$b$ by

1

$1$ .

b = \frac{30}{- 1}

$b = \frac{30}{- 1}$

b = \frac{30}{- 1}

$b = \frac{30}{- 1}$

Step 2.3

Simplify the right side.

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Step 2.3.1

Divide

30

$30$ by

- 1

$- 1$ .

b = - 30

$b = - 30$

b = - 30

$b = - 30$

b = - 30

$b = - 30$