This chapter begins with one-step equations involving addition, subtraction, multiplication, and division. It then moves on to more sophisticated equations that require two or multiple steps to solve. Here, you’ll learn how to combine like terms. Next, it introduces equations that have variables on both sides of the equal sign. Ratios and proportions are also discussed as are problems that entail scales and indirect measurement. The chapter concludes with a thorough discussion of percentages, an introduction to the percent equation, and a collection of real-life problems that involve percent of change.

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