Question

The formula for the perimeter of a rectangle is P=2l+2w. Which is the equivalent equation solves for w?

P-2l/2=w

P+2l/2=w

P+l=w

P-1=w

Answer 1

Answer: A is the correct answer (P-21/2w)

Explanation:

Answer 2

P = 21 + 2w

Solve for w

Subtract 21 from both sides.

P - 21 = 2w

Divide both sides by 2.

`(P-21)/(2)` = w

The first option is correct.