This worksheet is the classic adding and subtracting of rational functions. Factoring, finding a LCM, FOILing ... all the fun stuff us math teachers love, but students hate. My students enjoyed having the solutions listed. It made them feel better to have immediate feed back on how they were doing. (One of them pointed out they hate coming to class to find out they did the entire assignment wrong.) Upon completion of the worksheet, the solutions will reveal the answer to a puzzle.