1. Ch. 1.3 Solving Linear Equations

2. What is an equation?

3. Properties of Equality
Addition property of equality - can add the same term to both sides of an equation.
Subtraction property of equality - can subtract the same term from both sides of an equation.
Multiplication property of equality - can multiply both sides of an equation by the same term.
Division property of equality - can divide both sides of an equation by the same term.
** So basically, whatever you do to one side of an equation, you MUST do to the other!

4. To solve an equation for a variable:
Do order of operations backwards (undo +/- first, then multiply/divide)
Keep going until the variable is by itself on one side of the equation
You may have to simplify each side first.

5. 4 5
x + 8 = 20
Write original equation.