SOLUTION: the width of a rectangle is 3 inches less than twice its lenght. If perimeter of the rectangle is 36 inches, find its lenght and width.

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Question 183497: the width of a rectangle is 3 inches less than twice its lenght. If
perimeter of the rectangle is 36 inches, find its lenght and width.

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
W=L-3
2W+2L=36
2(L-3)+2L=36
2L-6+2L=36
4L=36+6
4L=42
L=42/4
L=10.5 IN.
W=10.5-3=7.5 IN.
PROOF:
2*7.5+2*10.5=36
15+21=36
36=36