SOLUTION: the width of a rectangle is 10 inches less than its length. If the perimeter of the rectangle is 36 inches what is its width in inches?

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Question 872120: the width of a rectangle is 10 inches less than its length. If the perimeter of the rectangle is 36 inches what is its width in inches?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
w width
L length
w=L-10 and 2w%2B2L=36.
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L=w%2B10, 2w%2B2%28w%2B10%29=36;
w%2Bw%2B10=18
2w=18-10=8
w=4