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8 (x - 1) - 7 (x + 1) + 3 (x + 2) = 3 (x - 2)
8x - 8 - 7x - 7 + 3x + 6 = 3x - 6
8x + 3x - 7x + 6 - 8 - 7 = 3x - 6
11x - 7x + 6 - 15 = 3x - 6
4x - 9 = 3x - 6
4x - 3x = - 6 + 9
x = 3
Respuesta
x = 3