Solve the following system of equations 2x+7y=-57 and - 6x-8y=80

I would use the process of elimination. Divide 13 from both sides

2x+7y=-57 y=-7 then plug in y to an equation

-6x-8y=80 2x+7 (-7) = - 57 multiple

multiple the first equation by 3 2x-49=-57 add 49 to both sides

6x+21y=-171 2x=-8 divide two from both sides

-6x-8y=80 x=-4

combine like terms So your things would be x=-4 and y=-7

13y=-91 And itd make the solution (-4,-7).