Read the section titled "Five Step Method." This method will guide you through solving problems in this and subsequent subunits of Unit 3. Read Examples 1 and 2 in Sample Set A, and try Exercises 1 and 2 from Practice Set A on your own. The solutions to the practice problems are shown directly below each problem.

Click http://cnx.org/contents/-PVfVy1M@2/Algebraic-Expressions-and-Equa link to open resource.