Answer:
x=5/6 but since you gave options in terms of y: -8y=6
Explanation:
When you add equations together to solve for a systems of equations, it because you want to cancel out one of the values, and in this case it's the 6x, since the 6x + (-6x) = 0
Now all you need to do is add the -12 and 4y and you get -8y which is going to be the left side of the equation
Now add the -8 and 14 and you get 6 which is going to be the right side of the equation. This gives you the equation:
-8y = 6
Divide both sides by -8
y = -0.75
Now plug this into either original equation but in this case I'll just use the -6x+4y=-8
Plug in -0.75 as y
-6x+4(-0.75) = -8
-6x-3=-8
-6x=-5
Divide both sides by -6
x=5/6