Solve using substitution.
7x + 7y = –7
y = –6
Since we have the value of y in terms of x, we can substitute this value into the first equation.
7x + 7(-6) = -7
7x - 42 = -7
Now, we can solve for x.
7x = -7 + 42
7x = 35
x = 35/7
x = 5
Therefore, the solution is x = 5 and y = -6.