the perimeter of a triangle is 31 cm. sides #1 and #2 have epual length, while side #3 is one centimeter shorter than twice the length of side #1. how long is each side

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1. 2x + (2x - 1) = 31

4x - 1 = 31
4x = 32

x = 8

The sides must be 8, 8, and 15

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