Answer:
L = (P - 2W) / 2
Step-by-step explanation:
Given:
P = 2L + 2W
Where,
P = perimeter of a rectangle
L = length of the rectangle
W = width of the rectangle
Make L the subject of the formula
P = 2L + 2W
Subtract 2W from both sides
P - 2W = 2L + 2W - 2W
P - 2W = 2L
Divide both sides by 2
(P - 2W) / 2 = 2L / 2
L = (P - 2W) / 2
The answer is L = (P - 2W) / 2