Can't Rearrange this equation!!!!!!??????? 1. The problem statement, all variables and given/known data I need to substitute one equation into another and rearrange for one term. I can't get the right answer! 2. Relevant equations I've had to attach the equations as pictures im afraid, here they are. The equation to be substituted-http://i423.photobucket.com/albums/pp315/skaboy607/Tobesubstituted.png [Broken] Main Equation-http://i423.photobucket.com/albums/pp315/skaboy607/MainEquation.png [Broken] What I cant get!-http://i423.photobucket.com/albums/pp315/skaboy607/FinalEqthatIcantget.png [Broken] 3. The attempt at a solution I have a few extra terms when I rearrange, it is driving me mad! Thanks for your help.