Question 428696
7x + 4y = 2
7x + 2y = 8
To solve by elimination, perform addition or subtraction of the two equations to eliminate one of the variables.  In this case, subtract equation (2) from equation (1):
2y = -6 -> y = -3
To get x, substitute into one of the equations:
7x + 4(-3) = 2 -> 7x = 12 + 2 -> x = 2
Ans: x=2, y=-3