Homework Help Forum: Elementary Math

Posted by carrie on Monday, August 17, 2009 at 6:51pm.

A student asks about the relation between least common multiple and least common denominator. How do yourespond?

• Elementary Math - Ms. Sue, Monday, August 17, 2009 at 6:55pm

  When you're adding or subtracting fractions, you need to find the least common denominator. For instance: 1/2 + 3/4 + 5/8 = 4/8 + 6/8 + 5/8 = 15/8 The least common denominator is also the least common multiple. In the above problem that is 8.

  
  

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