−8y+9x=−5 8y+7x=−75 ​

Answer 1

-8y + 9x = -5

8y + 7x = -75

I assume you want the solution to this system. Add the 2 equations and get

16y = -80

Solve this for y, then plug the value of y into either equation and solve for x. You should be able to finish from here.