Least Common Multiples

Find the least common multiple (LCM) of 3 and 9:

The multiples of 3 are: 3, 6, 9, 12, 15, 18, 21, 24, 27,...

The multiples of 9 are: 9, 18, 27,...

The common multiples of 3 and 9 are: 9, 18, 27...

The least common multiple of 3 and 9 is 9.

Find the LCM