Well, normally you'd need the get the y alone, such as the x when dealing with variables. So this will turn into a fraction problem.
5y+8
To isolate the y, we need to get it alone by removing the 5. Since 5 is currently multiplying the y, we need to do the opposite: divide.
5y+8
/5 /5
Since 8 does not go into five properly, here's where it becomes a fraction.
y+8/5
I hope this helped, I wish you could've given more information or explained what you needed to solve or find.
- Kathryn Irene