There is no "equation" to "solve" here. There is only an expression.
If the problem is to SIMPLIFY the given expression, then say so.
Re-post....
By the way.... Our purpose here is to help YOU learn how to do math. It looks as if you are dumping your entire assignment on us, wanting us to provide "complete solutions" so you don't have to do any work. That's not what we're her for.