I think you meant \(3/4t = 5/8\) you do it like this:
\(3/4t = 5/8\)
\(4/3\) multiplied by \(3/4t = 5/8\) multiplied by \(4/3\)
Now you multiply the fractions and you should get
\(t = 20/24\)
But you can simplify it so your final answer should be
Answer: \(t = 5/6\)