Algebra Examples

- 3 (p - 7) = 21

$- 3 (p - 7) = 21$

Step 1

Divide each term in

- 3 (p - 7) = 21

$- 3 (p - 7) = 21$ by

- 3

$- 3$ and simplify.

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Step 1.1

Divide each term in

- 3 (p - 7) = 21

$- 3 (p - 7) = 21$ by

- 3

$- 3$ .

\frac{- 3 (p - 7)}{- 3} = \frac{21}{- 3}

$\frac{- 3 (p - 7)}{- 3} = \frac{21}{- 3}$

Step 1.2

Simplify the left side.

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Step 1.2.1

Cancel the common factor of

- 3

$- 3$ .

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Step 1.2.1.1

Cancel the common factor.

$\frac{- 3 (p - 7)}{- 3} = \frac{21}{- 3}$

Step 1.2.1.2

Divide

$p - 7$ by

$1$ .

$p - 7 = \frac{21}{- 3}$

$p - 7 = \frac{21}{- 3}$

$p - 7 = \frac{21}{- 3}$

Step 1.3

Simplify the right side.

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Step 1.3.1

Divide

$21$ by

$- 3$ .

$p - 7 = - 7$

$p - 7 = - 7$

$p - 7 = - 7$

Step 2

Move all terms not containing

$p$ to the right side of the equation.

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Step 2.1

Add

$7$ to both sides of the equation.

$p = - 7 + 7$

Step 2.2

Add

$- 7$ and

$7$ .

$p = 0$

$p = 0$

$- 3 (p - 7) = 21$

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