# What is the LCM of 5 and 9?

##### 2 Answers

Jun 27, 2017

It is

#### Explanation:

The lowest common multiple (LCM) of numbers

#lcm(a,b)=(axxb)/gcd(a,b)#

where

In the given example the greatest common divisor (gcd) is

#### Explanation:

Multiples of

Multpiles of

From the lists we see that 45 is the [least common multiple].(https://socratic.org/prealgebra/factors-and-multiples/least-common-multiple)