Question

7x+8y=5
-9x-2y=-23
x=?
y=?

Answer 1

Do you know substitution?

Answer 2

Where you solve for x or y using one equation and plugging that into the other one.

Answer 3

you can add them.
first, you multiply 7x+8y=5 by 4 then you add both together
7x+8y= 5
-36x-8y=-92