Algebra I All-in-One For Dummies

Chapter 15

Lining Up Linear Equations

IN THIS CHAPTER

Getting down to the basics when solving linear equations

Making grouping symbols and fractions work

Putting proportions in their place

Linear equations consist of some terms that have variables and others that are constants. A standard form of a linear equation is . What distinguishes linear equations from the rest of the pack is the fact that the variables are always raised to the first power. If you’re looking for squared variables or variables raised to higher or more exciting powers, turn to Chapters 16 and 17 for information on dealing with those types of equations.

In this chapter, I take you through many different types of opportunities for dealing with linear equations. Most of the principles you use with these first-degree equations are applicable to the higher-order equations, so you don’t have to start from scratch later on.

When you use algebra in the real world, more often than not you turn to a formula to help you work through a problem. Fortunately, when it comes to algebraic formulas, you don’t have to reinvent ...