Ok you said elimination, I included substitution and elimination, always take the easiest one, I took (Y) (8y) because it was positive, on the other equation, you can do the same, by working with the (X) (7x) because the quantity is smaller!
10= 4x-8y=
We take the (Y)=
-8 + 10y -4x=
10(-8) + 10y -4x=
2+ 10y-4=
2 - 4 + 10y
= 2+ 10y
Y= 10 -2
Y=8
