Answer: x=-3, y=0
Step-by-step explanation
Take -2x-4y=6 as equation 1, and take equation 3x-4y=-9 as number 2.
Then, subtract the whole equation 2 from 1, and you will get -5x=15.
Solve for x (x=-3)
Substitute for x in for y in any equation. [E.x. : -2(-3)-4y=6]
Solve for y (y=0)
