<PRE><B>Question 758172</B>
Suppose that the width of a rectangle is 5 inches shorter than the length and that the perimeter of the rectangle is 80 inches. the formula for the perimeter of a rectangle is P=2L+2W
Set up an equation for the perimeter involving only l the length of the rectangle
.
Let L = length
then
L-5 = width
.
given:
P=2L+2W
substitute our data:
80 = 2L+2(L-5)

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