Khan Academy: Algebra: Simplifying First for Subtracting Rational Expressions

This learning exercise contains a good selection of problems of adding and subtracting rational expressions. There are eight problems. None of the problems have common denominators.  A few are mixed expressions and some require...

This worksheet contains 10 problems on subtracting rational expressions. It starts out with like denominators and progresses to more complicated problems. Answers are included. 

Combine a video with the lesson on combining rational expressions. Young mathematicians first review how to add and subtract rational numbers. They then learn how to apply the same reasoning to add and subtract rational expressions by...

Cancel that! Young mathematicians see how factoring and canceling can be very beneficial. The presenter works through examples of multiplying two rational expressions where the factors are simplified first. Factoring complex rational...

Provide your algebra class with some review of rational expressions in this video. Sal uses several sample problems to show viewers the process, and his explanations are clear and easy to understand.

Check your understanding of how to add and subtract rational expressions with these problems. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.

Learn how to add or subtract two rational expressions into a single expression.

Video shows examples of how to simplify rational expressions. Includes writing restrictions for simplified expressions. [15:22]

How to add and subtract rational expressions is explained through the use of examples and a video lesson. [2:09]

Reinforce instruction on the least common denominator and subtracting rational expressions with this tutorial video. Learners can view this video in class or at home. Consider using this resource to supplement your lesson plan.