-7y+9y=7-17
Add -7y and 9y.
2y=7-17
Subtract 17 from 7.
2y=-10
Divide each term in 2y=-10 by 2.
2y2=-102
Cancel the common factor of 2.
Cancel the common factor.
2y2=-102
Divide y by 1.
y=-102
y=-102
Divide -10 by 2.
y=-5
y=-5
Solve for y -7y+9y=7-17