Subtracting Fractions

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  1	1	–	1	1	=
  	2			3

  
  

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  * Converting mixed numbers into improper fractions.

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  If a fraction has a whole number attached to it, then they can be converted into an improper fraction.

  
  

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  STEP 2: Find the LCD of the fractions. Multiply it by the numerator and denominators of both fractions.

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  Both fractions have different denominators and thus are cannot to be easily added. Find the least common multiple (LCM) of the denominators and multiply it by the numerator and denominators of both fractions.

  
  

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  STEP 3: Subtract the fractions.

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  Both fractions have been converted to fractions with like denominators and can now be subtracted.