# How can you evaluate #24/7-21/2+11/14#?

##### 1 Answer

Jul 26, 2015

#### Answer:

Find a common denominator for your three fractions, then add their numerators.

#### Explanation:

In order to be able to add and/or substract fractions, you have to have *common denominators*. In your case, the common denominator for these three fractions is

In order to get the first two fractions to match this denominator, you have to multiply them by

This is equivalent to

Now simply add and subtract their *numerators* to get the final fraction