Answer:
(x, y) = (-3, -12)
Explanation:
Use either equation to substitute for y in the other:
2x -6 = 4x
-6 = 2x . . . . . subtract 2x
-3 = x . . . . . . divide by 2
Substitute this value for x in the second equation.
y = 4·(-3)
y = -12
The solution is (x, y) = (-3, -12).