Simplifying
6y = 8 + -9 + 6y
Combine like terms: 8 + -9 = -1
6y = -1 + 6y
Add '-6y' to each side of the equation.
6y + -6y = -1 + 6y + -6y
Combine like terms: 6y + -6y = 0
0 = -1 + 6y + -6y
Combine like terms: 6y + -6y = 0
0 = -1 + 0
0 = -1
Solving
0 = -1
Couldn't find a variable to solve for.
This equation is invalid, the left and right sides are not equal, therefore there is no solution.