Respuesta :

Solve the system of equations by the addition method.

6x - y = 12
6x + y = 0
——————
12x = 12


12x/12 = 12/12

X = 1


Now plug x back into one of the equations.

6x + y = 0
6(1) + y = 0
6 + y = 0

(Subtract both sides by 6)

Y = -6