## LESSON: Solving Two-Step Equations

### Vocab/Objectives

## Objectives

- Write two-step single variable equations from verbal models.
- Solve two-step single variable equations.
- Identify properties used to solve multi-step equations.
- Model and solve real-world problems using two-step equations.

- Inverse Operation
- the opposite operation

## Vocabulary

- One-Step Equation
- an equation with one operation in it

- Two-Step Equation
- an equation with two operations in it

- Isolate the Variable
- a process to get the variable alone on one side of the equals.

- Subtraction Property of Equality
- is used when you have an equation with addition in it. It states that you can subtract the same quantity from both sides of an equation and it will still balance.

- Addition Property of Equality
- is used when you have an equation with subtraction in it. It states that you can add the same quantity to both sides of an equation and it will still balance.

- Division Property of Equality
- is used when you have an equation with multiplication in it. It states that you can divide the quantities on both sides of an equation by the same value and the equation will still balance.

- Multiplication Property of Equality
- is used when you have an equation with division in it. It states that you can multiply the quantities on both sides of an equation by the same value and the equation will still balance.

### Technology Integration

- http://www.mathplayground.com/mv_solving_two_step_equations.html – This is a Brightstorm video on solving two-step equations.