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Rational Functions

Addition/Subtraction

Addition and subtraction of fractions with the same denominator is easy. Just add or subtract the numerators.

and

Example

2 over (x plus 1)minus x over (x plus 1) equals (2 minus x) over (x plus 1)

More Examples

Exercise

Enter the answer numerator and denominator on the right hand side.



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In general, we multiply the denominators of two given fractions and use it as a common denominator:

and

Example

More Examples

Exercise

Enter the new numerator and denominator on the right hand side.



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When the denominators of two given fractions have a common factor, we could use a common denominator with smaller degree; namely the LCM.

Example

Exercise

Simplify the rational functions.



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<< Equivalent Rational Functions | Rational Functions Index | Multiplication of Rational Functions >>

 

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