to solve for x and y, you can either substitute equations or add or subtract the equation. for my explanation, I will subtract equations.
to start, you must look at the xs and ys to find similarities. since they both have 8y, we can easily subtract the equations to cancel the y for now and find x x+8y=-15. x+8y=-15 -(7x+8y=-9. = -7x-8y=9
when you subtract the equations you get -6x=-6 dividing each side by -6 to get the x by itself will give you x=1 then, solve for y by substituting the 1 in the x stop of either equation I will be substituting the x in the first equation 1+8y=-15 8y=-16 y=8 both equations should give you the same answer to check, substitute the x and y in the other equation 7(1)+8(-2)=-9 7-16=-9 -9=-9 so x=1 and y=-2
