Respuesta :

{6x+3y=12
{6x+5y=6
---------------
      -2y = 6
         y = -3

6x + 5y = 6
6x + 5(-3) = 6
6x - 15 = 6
6x = 6 + 15
6x = 21
x = 21/6 = 3.5

Answer: x=3.5, y=-3