SOLUTION: The perimeter of a rectangle is 120ft. When the width is increased by 9 ft. And the length is decreased by 9ft, The resulting is a square. What are the dimension of the rectangle?

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Question 1169585: The perimeter of a rectangle is 120ft. When the width is increased by 9 ft. And the length is decreased by 9ft, The resulting is a square. What are the dimension of the rectangle?
Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
Symbolize the whole description literally and see what happens.

system%28w%2BL=60%2C+%28w%2B9%29=%28L-9%29%29

A small bit of algebra may bring to system%28w%2BL=60%2CL-w=18%29
Or Better
system%28L%2Bw=60%2CL-w=18%29-------simple to solve.