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5(x + 8) - 12 = 2(x + 1) +29
5x + 40 - 12 = 2x + 2 + 29
5x + 28 = 2x + 31
5x - 2x = 31 - 28
3x = 3
x = 3/3
x = 1
Respuesta.
x = 1