SOLUTION: the width of a rectangle is 7 inches shorter than its length. The area is 78 square inches. What are the dimensions of the rectangle?

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Question 872257: the width of a rectangle is 7 inches shorter than its length. The area is 78 square inches. What are the dimensions of the rectangle?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
w width
L length
w=-7+L and wL=78. Try substitution.