In This Chapter
Using variables (such as x) in equations
Knowing some quick ways to solve for x in simple equations
Understanding the balance scale method for solving equations
Rearranging terms in an algebraic equation
Isolating algebraic terms on one side of an equation
Removing parentheses from an equation
Cross-multiplying to remove fractions
When it comes to algebra, solving equations is the main event.
Solving an algebraic equation means finding out what number the variable (usually x) stands for. Not surprisingly, this process is called solving for x, and when you know how to do it, your confidence — not to mention your grades in your algebra class — will soar through the roof.
This chapter is all about solving for x. First, I ...