SOLUTION: the perimeter of a rectangle is 42. the length of the rectangle is 1 less than double the width. find the length of the rectangle.

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Question 1115097: the perimeter of a rectangle is 42. the length of the rectangle is 1 less than double the width. find the length of the rectangle.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
L=2w-1
L%2B1=2w
w=%28L%2B1%29%2F2

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Question is to find the length, L.

L%2B%28L%2B1%29%2F2=21
2L%2BL%2B1=42
3L=41
L=41%2F3
highlight%28L=13%262%2F3%29