What are the three frist multiples of 3 and 9?
The first three multiples of 3 are 3, 6, 9
The first three multiples of 9 are 9, 18, 27
As the lowest common multiples of 3 and 9 is 9, the common
multiples of 3 and 9 are the multiples of 9, thus:
The first three common multiples of 3 and 9 are 9, 18, 27