No homework, just a problem I'm faced with at work. And being the granny I am, this is ages ago since I solved anything like this. x/36-x = 12/36-12 + 3.013/0.20(36-3.013) The solution to this is 17.6. The question is: how do I solve such equations for x? If I ignore the 36 on the left side and asume it's not a fraction it's no problem, but um.. this is too long ago.