Hate it, love it or try to elude it, algebra in a whole is a prevalent subject. It is so widespread that it has become an international language. That is why each country always arrives at the end to the same answer even if they've dealt with the equations in different manners. "Algebra For Dummies" attempts to make everything easier, so it can be understood by everybody who's interested in learning that matter. So good luck and relish everything in that book.