We have to express in terms of .
The correct answer is
Multiplying both sides by we get
I am going to stop there as I am on the wrong track. I would appreciate your help in finding the solution.
From your other posts I assume you started with , and want to rearrange to make x the subject. By the way - to avoid confusion iit would have been better to add your attempt to your previous thread rather than start a new one - that way we wouldn't have to guess at what the original problem was.
Now divide both sides by and you're done.