answered 3/22/2010 How Do I Solve 3(5X -2)=54? How Do I Solve -5 + X = -21? How Do I Solve 7-4X > 3-3X ? Please, Don't Just Give The Answer, Walk Me Through It Step By Step. How do I solve 5x+7>x+21 don't just give me the answer, walk me through it step by step.