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Prealgebra

Introduction to Solving Linear Equations

PrealgebraIntroduction to Solving Linear Equations
An image of a calder mobile is shown. It has several black and red geometric shapes hanging down.
Figure 8.1 A Calder mobile is balanced and has several elements on each side. (credit: paurian, Flickr)

Chapter Outline

8.1 Solve Equations Using the Subtraction and Addition Properties of Equality
8.2 Solve Equations Using the Division and Multiplication Properties of Equality
8.3 Solve Equations with Variables and Constants on Both Sides
8.4 Solve Equations with Fraction or Decimal Coefficients

Teetering high above the floor, this amazing mobile remains aloft thanks to its carefully balanced mass. Any shift in either direction could cause the mobile to become lopsided, or even crash downward. In this chapter, we will solve equations by keeping quantities on both sides of an equal sign in perfect balance.

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