#### Why You Need Equations

#### What Is an Equation?

#### What Is a Variable?

#### How to Solve Equations (Change Sides, change sign)

#### How to Get Rid of the Number in Front of x

#### How to Solve Linear Equations (Combined Methods)

#### How to Get Rid of the Number Under x

#### How to Solve Equations with Parentheses

#### How to Solve Formulas for Specified Variables

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