Solve for w P=21+2w

$P = 21 + 2 w$

Step 1

Rewrite the equation as $21 + 2 w = P$ .

$21 + 2 w = P$

Step 2

Subtract $21$ from both sides of the equation.

$2 w = P - 21$

Step 3

Divide each term in $2 w = P - 21$ by $2$ and simplify.

Divide each term in $2 w = P - 21$ by $2$ .

$\frac{2 w}{2} = \frac{P}{2} + \frac{- 21}{2}$

Simplify the left side.

Cancel the common factor of $2$ .

Cancel the common factor.

$\frac{2 w}{2} = \frac{P}{2} + \frac{- 21}{2}$

Divide $w$ by $1$ .

$w = \frac{P}{2} + \frac{- 21}{2}$

Simplify the right side.

Move the negative in front of the fraction.

$w = \frac{P}{2} - \frac{21}{2}$