Systems of Linear Equations
The best way to learn how to solve a word problem is to do it. Same goes for freestyle swimming, riding a bike, or writing a book about the ideological origins of the American Revolution. Okay, actually the last one could benefit from some preliminary research. You may not want to just dive in on that one.
We've already done the translation for each of the exercises in this section, so don't start claiming "deja vu" if they seem familiar, but it can't hurt to go through them again and solve them this time.