The perimeter of a triangle is 39 inches. If the length of the shortest side is 1/2 the length of the longest side, and the length of the third side is 1 less than the length of the longest side, what is the length of each side? If x is the shortest side and y is the longest side, one equation is a. x y z=39 b. 2x+2y+2z=39 c. x+y+z=39 d. 1/2xyz=39
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