6.5 SIMPLIFYING EXPRESSIONS

Learning objectives

At the end of this paragraph you are able to...

... explain what an expression is.
... subtract and add like terms.
...explain someone how to add and subtract like terms.
... complete a letter pyramid.

Which level of difficulty should you choose?

You will get a question to test yourself. If you have no difficulties with the question you should choose the normal path or the in-depth path. If you struggle with the exercise it is wise to choose the supporting path.

The choice is yours, choose wisely.

Which level of difficulty should you choose?

Simplify

2a - 4a + 9n - a - 2n + 6a - 4

Answer