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4x + 1 - 2x = - 11 - 7x
2x + 1 = - 11 - 7x
2x + 7x = - 11 - 1
9x = - 12
x = - 12/9
Respuesta.
x = - 12/9
2x + 1 = - 11 - 7x
2x + 7x = - 11 - 1
9x = - 12