# What is the lowest common denominator for 1/4, 3/5, and 7/9?

##### 1 Answer

Lowest Common Denominator is

#### Explanation:

Lowest Common Denominator of fractions is different from finding Lowest Common Denominator of natural numbers.

To find the Lowest Common Denominator of fractions,

one has to first find the Lowest Common Denominator of all the numerators, say it is

and then Highest Common Factor of all the denominators, say it is

Then

In the given example, we have

In the denominators we have

Hence, Lowest Common Denominator of fractions