x = 7
8x - 8y = 16.
Plug 7 from the first equation into x for the second equation
8(7) - 8y = 16.
Simplify the left side.
56 - 8y = 16.
Subtract 56 from each side.
-8y = -40.
Divide each side by -8
y = 5.
We know x = 7 and y = 5, therefore,
Your answer should be (7,5)