Question

-3x+2y=10, 4x-7y=4 solve by elimination

Answer 1

{(−6,−4)}

Answer 2

I solved it by using matrices by elimination

Answer 3

x=−6
y=−4

Answer 4

multiply -3x+2y=10 by 4
multiply 4x-7y=4 by 3
-12x+8y=40
12x-21y=12
combine to get -13y=52
solve for y to get -4
plug -4 into either equation to get x
4x-7(-4)=4
4x+28=4
x=-6