Question

Given the equation P = 2w + 2l solve for w.

A) 2w = P - 2l
B) w =2l + P/2
C) w = P -2l/2
D) w = P -2l/2

Answer 1

P = 2w + 2l....subtract 2l from both sides
P - 2l = 2w....divide both sides by 2
(P - 2l)/2 = w

Answer 2

The correct option is D.

Explanation:

The given equation is

`P=2w+2I`

We need to solve the above equation for w.

Subtract 2I from both sides.

`P-2I=2w+2I-2I`

`P-2I=2w`

Divide both sides by 2.

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

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

The formula for w is
`w=(P-2I)/(2)`.

Therefore the correct option is D.