SOLUTION: The perimeter of a rectangular window in an office building is 204 inches. The length is 6 inches less than twice the width. Find its length. (Can't remember how to solve, please h

Algebra ->  Rectangles -> SOLUTION: The perimeter of a rectangular window in an office building is 204 inches. The length is 6 inches less than twice the width. Find its length. (Can't remember how to solve, please h      Log On


   

Question 966585: The perimeter of a rectangular window in an office building is 204 inches. The length is 6 inches less than twice the width. Find its length. (Can't remember how to solve, please help.)
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
dimensions w and L.
Formula for perimeter, p: p=2w+2L

Transcribe your description.
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p=2w+2L and you are given p=204.
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L=-6+2w

system%28L=2w-6%2C2w%2B2L=204%29

More than one way to solve the system for w and L, but in this case,
(1) Simplify the perimeter equation;
(2) Substitute for L;
(3) Solve for w;
(3) Use result for w to evaluate L.