Question

The equation P = 2(l + w) can be used to find the perimeter P of a rectangle with length l and width w. Solve the equation for w to produce a formula for finding the width of a rectangle given its perimeter and length.
The formula is w = (blank)

Answer 1

Answer:

w = P/2 - l

Step-by-step explanation:

P = 2(l + w)

P/2 = l + w

w = P/2 - l

Answer 2

Answer:

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

Step-by-step explanation:

P = 2(l + w)

Divide 2 to both sides:

P / 2 = l + w

Minus l to both sides:

P / 2 - l = w

Rewrite the equation:

w = P/2 = l