Respuesta :

Answer:   -3x +  y = 12

                 -2x + 4y = 18

Step-by-step explanation:

  -3x +  y = 12

+   x + 3y = 6

  -2x + 4y = 18

System of equations is:

-3x +  y = 12

-2x + 4y = 18