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OpenStudy (anonymous):
The length of a rectangle is 3 inches less than twice the width. If the perimeter of the rectangle is 18 inches, find the width of the rectangle.
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OpenStudy (stormfire1):
\[L=2W-3\]\[P = 18 = 2L+2W = 2(2W-3) + 2W\]\[W=4\]
OpenStudy (anonymous):
Oh thanks(: So the final answer is 4?
OpenStudy (stormfire1):
Yes
OpenStudy (stormfire1):
Do you understand the math of it? I just solve L in terms of W and plugged it into the perimeter equation.
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