The first three terms of an AP are respectively (3y-1),(3y+5) and (5y+1) ,find the value of y

The first three terms of an AP are respectively (3y-1),(3y+5) and (5y+

1.	The first three terms of an AP are respectively (3y-1),(3y+5) and (5y+1) ,find the value of y
Answer» Y=5