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Module by: Wade Ellis, Denny Burzynski. E-mail the authors

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Name: Rational Expressions: Applications
ID: m21938
Language: English (en)

This module is from Elementary Algebra by Denny Burzynski and Wade Ellis, Jr.

A detailed study of arithmetic operations with rational expressions is presented in this chapter, beginning with the definition of a rational expression and then proceeding immediately to a discussion of the domain. The process of reducing a rational expression and illustrations of multiplying, dividing, adding, and subtracting rational expressions are also included. Since the operations of addition and subtraction can cause the most difficulty, they are given particular attention. We have tried to make the written explanation of the examples clearer by using a "freeze frame" approach, which walks the student through the operation step by step.

The five-step method of solving applied problems is included in this chapter to show the problem-solving approach to number problems, work problems, and geometry problems. The chapter also illustrates simplification of complex rational expressions, using the combine-divide method and the LCD-multiply-divide method.

Objectives of this module: be able to use the five-step method to solve various applied problems.

Subject: Mathematics and Statistics
Keywords: algebra, elementary, five-step method, rational expressions
License: Creative Commons Attribution License CC-BY 3.0

Authors: Wade Ellis (, Denny Burzynski (
Copyright Holders: Wade Ellis (, Denny Burzynski (
Maintainers: Wade Ellis (, Denny Burzynski (, LearningMate LearningMate (, Matt Gardner (

Latest version: 1.3 (history)
First publication date: Mar 4, 2009 8:16 am -0600
Last revision to module: May 27, 2009 4:47 am -0500


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Version History

Version: 1.3 May 27, 2009 4:47 am -0500 by LearningMate LearningMate
Final Publish.

Version: 1.2 Apr 28, 2009 3:50 am -0500 by LearningMate LearningMate
Dynamic Links added

Version: 1.1 Apr 16, 2009 7:04 am -0500 by LearningMate LearningMate
First Publish.

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