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OpenStudy (anonymous):
The perimeter of a rectangle is 42cm. The length is 3cm greater than the width. Find the width.
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OpenStudy (espex):
Recall that P = 2*L + 2*W, and you're given that L = W+3 Rewrite the equation to P = 2(W+3) + 2*W Plug in your values and solve for W. :)
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