In this module you can study how to substitute numbers into algebraic expressions.
For example, you'll study how to find the value of (x + 2y) when x=3 and y=5.

In this module you can study how to substitute given values into a formula.
For example, you'll learn how to find the perimeter of a square (the formula for this is p=2w + 2l) when you know the width is 10m and the length is 20m.

Working with linear equations (equations with no squares or roots)

In this module you will learn how to solve equations that take one step to solve.
These are examples of the types of equations you might work with: 3 = x + 1 or x - 6 = 2 or x/2 = 10.

In this module you can study how to solve equations that take two steps to solve.
These are examples of the types of equations you might work with: x/2 +4 = 6 or 2x - 9 = 11.

In this module you can study how to solve simple linear equations that take more than two steps to solve.
You will work with more complicated equations, such as this one: 3(x+2)/10 +4 = 20

In this module you can study how to change an equation around so that any variable is by itself on one side of the equal sign.
For example, you will study how to change this P = 2W + 2L into this: W = (P - 2L) / 2

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