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# Addition and Subtraction of Rational Expressions

## Add and subtract fractions with variables in the denominator

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Addition and Subtraction of Rational Expressions

by CK-12 //basic
Learn how to add and subtract rational expressions.
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## Adding Rational Expressions - Overview

by CK-12 //basic
Overview
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## Subtracting Rational Expressions - Overview

by CK-12 //basic
Overview
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## Adding Rational Expressions - Example 1

by CK-12 //basic
Adding Rational Expressions with Like Denominators
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## Adding Rational Expressions - Example 2

by CK-12 //basic
Finding Least Common Multiples of Two Polynomials
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## Adding Rational Expressions - Example 3

by CK-12 //basic
Adding Rational Expressions with Unlike Denominators
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## Subtracting Rational Expressions - Example 1

by CK-12 //basic
Subtracting Rational Expressions with Like Denominators
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## Subtracting Rational Expressions - Example 2

by CK-12 //basic
Subtracting Rational Expressions with Unlike Denominators
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