Unsure how to show this as an equation. I tried looking for a help guide for this site, so I apologize and if anyone can direct me that would be great.

But the problem is this.

Solve y = 1/2 a t^2 for t

The 1/2 is a fraction. I looked online and found many examples but all of them had addition signs and were not exactly like this. I am pretty stumped.