Question

Solve the system using elimination

2x + 6y = -12
5x - 5y = 10

Answer 1

Doesn't seem to be an obvious choice of which variable to eliminate, so choose one arbitrarily. What do you want to eliminate, x or y?

Answer 2

multiple the 1st equation by 5 and the 2nd by 6

add the 2 new equations

this will eliminate y

then solve for x

when you get x

substitute into either equation to find y