# Symbolic expressions and simplifying

I asked this on IRC, but no-one seemed to be on there.

I had a quick question concerning simplifying a symbolic expression in sage. Basically, when i do a Laplace transform, i end up with the RHS of the following equation, but I would like to see the LHS of the equation

http://upload.wikimedia.org/math/a/1/...

Would anyone know how to change from one side to the other side please?

Can you post some example code?