X - 7(2x + 1) = 2(6 - 5x) - 13?
X - 7(2x + 1) = 2(6 - 5x) - 13.
X - 7(2x + 1) = 2(6 - 5x) - 13.
En resumen
Ahi te va la solucion.
X - 7(2x + 1) = 2(6 - 5x) - 13
x - 14x - 7 = 12 - 10x - 13
x - 14x + 10x = 12 - 13 + 7 - 3x = 6 ( - 1)
3x = - 6
x = - 6 / 3
x = - 2
Suerte.