Please help (simple rearrangement help needed on matlab)

Hi,

I am new to matlab and would be very grateful to anyone who could help. I am trying to solve a long polynomial of the third degree consisting of several terms. However the variable I want to solve for occurs both in the dominator and nominator. I was wondering how I could get all terms which involve the relevant variable onto one side of the equation to generate a simulation.

I have tried solving it by hand with no luck and really need help!

Thanks