SOLUTION: the perimeter of a rectangle is 74 inches. Two of the sides of the rectangle measure 21 inches each. how long is each of the other sides?

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Question 621460: the perimeter of a rectangle is 74 inches. Two of the sides of the rectangle measure 21 inches each. how long is each of the other sides?
Answer by nerdybill(7384) About Me  (Show Source):
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the perimeter of a rectangle is 74 inches. Two of the sides of the rectangle measure 21 inches each. how long is each of the other sides?
.
Let x = length of remaining two sides
then
2(x+21) = 74
x+21 = 37
x = 16 inches