Answer:(-2,3)Step-by-step explanation:7x+8y=105x+y=-7To solve this by elimination, we need both equations in the same form. There are. They are both in form ax+by=c.Now we also need for one of the columns with the variables to be opposite or same terms.I like the way the column with the y's are looking because if I multiply that second y by 8 or -8 I will have sames or opposites.I'm going to multiply the second equation by -8.This will give me: 7x+8y=10-40x-8y=56--------------------Add the equations! -33x+0=66 -33x =66 x =66/-33 x =-2Now we need to find the other variable. It doesn't matter which equation you use.I'm going to use 5x+y=-7 where x=-2 to find y.5(-2)+y=-7-10+y=-7Add 10 on both sides y=3The solution is (-2,3)