SOLUTION: A picture frame has a perimeter of 40 in. if the width is 4 in. shorter than the length, what is the length and width?

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Question 217903: A picture frame has a perimeter of 40 in. if the width is 4 in. shorter than the length, what is the length and width?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
2(x+4)+2x=40
2x+8+2x=40
4x+8=40
4x=32
x=8
x+4=12