# Question #af32b

##### 1 Answer

Feb 2, 2017

You make them have the same denominators

#### Explanation:

If you have a fraction, you can multiply the top and the bottom by the same number and the fraction remains the same.

Ex:

So you can make sure that the denominators are equal by finding the **"least common multiple"** and making that the denominator of both fractions.

Ex:

The least common multiple of the denominators 9 and 6 is **18** so: