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.

- Elementary Math -
**dsfg**, Wednesday, January 26, 2011 at 3:56pm
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