If you are not extremely good at Maths, Equation Wizard will do it fo you. It will calculate it and offer you the result.
Not only does it solve the equation but it also tells you how it solved it, so you will be able to learn how to solve algebraic equations yourself: move variables, eliminate parenthesis, simplify, etc.
Equation Wizard automatically solves algebraic equations written in any form, type the equation in the program the way you see it in your textbook and it will reduce it to a canonical form. That's all, insert the equation and get the solving with detailed explanations. It's amazing.