Question

5 2
-- - ---
x x

I got 5-2
----
x-x

Is it correct?

Answer 1

You mean like this:
\[\frac{ 5 }{ x } - \frac{ 2 }{ x }\]

Answer 2

If you mean what some_someone put, the denominators do not subtract. They must match so that you can subtract the numerators.