Posted by **Ashley** on Monday, January 14, 2008 at 8:26pm.

How do you find a common denominator when subtracting whole numbers and fractions?

- Algebra 1 -
**Ms. Sue**, Monday, January 14, 2008 at 8:31pm
Find the common denominator for the fractions.

Example:

2 3/4 - 1 2/5

The common denominator is 20.

2 3/4 = 11/4 = 55/20

1 2/5 = 7/5 = 28/20

- Algebra 1 -
**Ashley**, Monday, January 14, 2008 at 8:37pm
Thank you sooo much for your help now it all makes sence!!!! ;))

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