In this activity, we will learn how to simplify expressions.

To simplify an expression we have to **collect together the terms that are alike**, that is all the x's, all the y's and all the terms that are just numbers.

Sometimes it is necessary to **multiply out brackets.**

Remember we are just simplifying expressions. It is impossible to solve expressions as there are no equals signs and these are not equations.

__Example 1__

Simplify 2x + 5 - 4x - 1 + x

**Answer 1**

2x - 4x + x + 5 - 1

= **-x + 4 or 4 - x**

**Example 2**

Simplify 3(x - 4) - 2(x - 1)

**Answer 2**

First, we multiply out the brackets to get

3x - 12 - 2x + 2

Then we collect like terms.

3x - 2x - 12 + 2

**x - 10**

Start the questions when you're ready!