Find the least common multiple of 3 and 9.
To find the least common multiple of 3 and 9, we can list the multiples of each number and find the common multiples:
Multiples of 3: 3, 6, 9, 12, 15, ...
Multiples of 9: 9, 18, 27, 36, 45, ...
From the list, we can see that the least common multiple of 3 and 9 is 9.