Answer:
(8, -1)
Explanation:
To use elimination, we can add the two equations together to eliminate the y:
x-y = 9
x+y = 7
x + x -y + y = 16
2x = 16
x = 8
Plug that back into the original equation to get:
8-y = 9
y = -1
So the ordered pair is (8, -1)