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5 (4x − 1) −3 (5x − 17) = 4x + 4
20x - 5 - 15x + 51 = 4x + 4
20x - 15x - 5 + 51 = 4x + 4
5x + 46 = 4x + 4
5x - 4x = 4 - 46
x = - 42
Respuesta.
x = - 42
5x-4x=4+5-51
x=9-51
x=42