Respuesta :
4x - 3 = -12x + 13
4x + 12z = 13 + 3
16x = 16
x = 16/16
x = 1 <=== this would make the equation true
4x + 12z = 13 + 3
16x = 16
x = 16/16
x = 1 <=== this would make the equation true