SOLUTION: The width of a rectangle is 12 units less than the length. The perimeter is 108 units. Find the length.

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Question 168295: The width of a rectangle is 12 units less than the length. The perimeter is 108 units. Find the length.
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
W=L-12
2W+2L=108
2(L-12)+2L=108
2L-24+2L=108
4L=108+24
4L=132
L=132/4
L=33 IS THE LENGTH.
W=33-12
W=21 IS THE LENGTH.
pROOF:
2*21+2*33=108
42+66=108
108=108