Math Refresher

*EQUATIONS *

*In mathematics, a ***variable** is a letter which can represent a variety of different numbers. For example: **p = 2.2k** . This can be used to convert a weight from kilograms (k) to pounds (p). Since you could substitute different numbers in for **k **it is called a variable.

The formula we just looked at is called an **equation** because it __contains an equal sign__ with something on both sides.

A combination of variables and numbers using the operations of addition/subtraction, and multiplication/division __without an equal sign__ or if there is an equal sign,without something on both sides of the equal sign, is known as an **expression**.

If an equation had a solution that means there is a number that could be substituted in place of the variable that would *balance* each side of the equation.* *

- Basic Equations, Formulas & Inequalities worksheetPractice problems for solving basic Equations, Formulas & Inequalities
- Basic Equations, Formulas & Inequalities worksheet - ANSWERSAnswer sheet for Basic Equations, Formulas & Inequalities worksheet
- Solving a System of Equations worksheetPractice solving problems involving Systems of Equations.
- Solving a System of Equations worksheet - ANSWERSAnswer sheet for Solving a System of Equations worksheet