Answer
The solution set is {1,-1/3}.
Work Step by Step
In order to solve this equation you must create who seperate equations.
9y+1=6y+4
9y-6y+1=6y-6y+4
3y+1=4
3y+1-1=4-1
3y=3
3y/3=3/3
y=1
and
9y+1=-6y-4
9y+6y+1=-6y+6y-4
15y+1=-4
15y+1-1=-4-1
15y=-5
15y/15=-5/15
y= -1/3
