What is the lcm of 5 and 9?

The least common multiple of 5 and 9 is the smallest number that is a multiple of both 5 and 9.

To find the LCM of 5 and 9, we can start by listing the multiples of each number: Multiples of 5: 5, 10, 15, 20, 25, 30, ... Multiples of 9: 9, 18, 27, 36, ...

From the lists above, we can see that the first common multiple of 5 and 9 is 45. Therefore, the LCM of 5 and 9 is 45.