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Add and Subtract Rational Expressions




 

Videos and lessons to help High School students understand that rational expressions form a system analogous to the rational numbers, closed under addition, subtraction, multiplication, and division by a nonzero rational expression; add, subtract, multiply, and divide rational expressions.


Suggested Learning Targets


  • Simplify rational expressions by adding, subtracting, multiplying, or dividing.
  • Understand that rational expressions are closed under addition, subtraction, multiplication, and division (by a nonzero expression).

Common Core: HSA-APR.D.7

Related Topics:
Common Core (Algebra)

Common Core for Mathematics

Adding and Subtracting Rational Expressions
This video explains how to add and subtract rational expression with and without like denominators.


Ex 1: Add and Subtract Rational Expressions - Like Denominators
This video provides two examples of how to add and subtraction rational expressions with the the same denominators.





Ex 2: Add and Subtract Rational Expressions - Like Denominators
This video provides two examples of how to add and subtraction rational expressions with the the same denominators.


Ex 3: Add and Subtract Rational Expressions - Like Denominators
This video provides two examples of how to add and subtraction rational expressions with the the same denominators.



 

Ex 1: Add and Subtract Rational Expressions - Unlike Denominators
This video provides two examples of how to add and subtraction rational expressions when the denominators are different.


Ex 2: Add and Subtract Rational Expressions - Unlike Denominators
This video provides two examples of how to add and subtraction rational expressions when the denominators are different.




Ex 3: Add and Subtract Rational Expressions - Unlike Denominators
This video provides two examples of how to add and subtraction rational expressions when the denominators are different.


Ex 4: Add and Subtract Rational Expressions - Unlike Denominators
This video provides two examples of how to add and subtraction rational expressions when the denominators are different.



 

Ex: Add and Subtract Rational Expressions - Opposite Denominators
This video provides two examples of how to add and subtraction rational expressions when the denominators are opposites.


Adding, subtracting, multiplying, and dividing rational expressions (CCSS: A-APR.7)
In this lesson you will learn to add rational expressions by making connections to adding fractions.




In this lesson you will learn to subtract rational expressions by making connections to subtracting rational numbers.

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.


You can use the free Mathway widget below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.




 

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