Respuesta :

The perimeter of the triangle is computed adding the length of each side. That is,

P = (2x - 2) + (2x - 2) + x

P = (2x + 2x + x) + (-2 - 2)

P = 5x - 4

Substituting with P =56 and solving for x:

56 = 5x - 4

56 + 4 = 5x

60 = 5x

60/5 = x

12 = x

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