Wow, that's actually a really good way to do it! I will try my best to remember all this for the test. I need to start practicing my re-arranging because my opinion is that if you remember the formula for the correct equation most of the rest will be re-arranging to make the subject of the formula and when you have a lot of numbers it does confuse me and I think it would confuse anyone, I will try and apply your method and see how it goes!
Practice makes perfect they say, Thanks for all your help everyone! Best forum commnuity I have probably ever come across! I will do my best to help others out too! :)