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## GED Math Chapter 9: Percent, Rates, Ratio and Proportions – Lesson 4

OK, welcome to this last lesson in the chapter the topic is simplifying rational expressions.  Knowing how to simplify a rational expression is really important in algebra so you want to focus on the skills I’m going to teach.  A rational expression is basically a fraction with variables.  So simplifying a rational expression can be thought of as “reducing” a fraction with variables.

Things to focus on this lesson:

• what a rational expression is
• factoring
• how to cancel like factors

#### Simplifying Rational Expressions

Most of the bad things we worry about never happen- focus your energy on taking action and going for your dreams.

### Great Job!  you finished the entire chapter.  Let’s review some of the skills you should have this far into the course:

• Being able to solve equations and inequalities
• Understanding how to graph lines
• Knowing how to work with powers and exponents
• Being able to solve percent problems
• Knowing how to simplify rational expressions

In the next chapter we will start to learn about systems and matrices- key topics in algebra.

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