(0,-1)
Add 7y to both sides of the equation.
x=7y+7
-8y-8x=8
Replace all occurrences of x with the solution found by solving the last equation for x. In this case, the value substituted is 7y+7.
x=7y+7
y=−1
Replace all occurrences of y with the solution found by solving the last equation for y. In this case, the value substituted is −1.
x=7(−1)+7
y=−1
Simplify
x=0
y=-1