# algebra

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The perimeter of a rectangle equals the sume of the lengths of its four sides. If the width of a rectangle is 9 inches and its perimeter is 52 inches, find the length of the rectangle.

• algebra -

P = 2L + 2W

52 = 2L + 18

52 - 18 = 2L

34 = 2L

24/2 = L

• algebra -

find the unknown side. The area of the rectangle is 126 square centimeters one side is 7 cm what is the value of x.

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