SOLUTION: What is the perimeter of a rectangle with a width that is 7 feet shorter than its length?

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Question 107414: What is the perimeter of a rectangle with a width that is 7 feet shorter than its length?
Answer by Annabelle1(69) About Me  (Show Source):
You can put this solution on YOUR website!
length=x
width=x-7
p=x+(x-7)+(x-7)+x
p=4x-14