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!!!! ;))

## Answer this Question

## Related Questions

- math - I forgot how to add and subtract mixed # fractions. How do you do it? ex...
- Math/fractions - I need help with subtracting fractions I have no idea if I'm ...
- ordering numbers fractions - find equivalent fractions with a common denominator...
- math - how do you solve this type of math problems that indicates to perform the...
- algebra - Solve for x x/6-x/8 equals 1 Do fraction busters Find the least common...
- subtracting fractions - 4/5-2/3=? Find the least common denominator of 5 and 3 ...
- java - Write a program that will find the lowest common denominator of two ...
- math - 12 1/3 + 7 7/15 switch fractions to improper fractions then find a common...
- math - what are the possible advantages and disadvantages of using least common ...
- java - can anyone help me with this? I'm new to java! Write a program that will ...