How do you find the least common multiple of 9, 6, and 2?
Factor each number to its prime factors multiply all the prime factors together, use each prime number only once.
9 can be factored into
6 can be factored into
( since nine already has two factors of 3 the factor of three from six does not need to be used)
2 can be factored into
( since six already has a factor of 2 the second factor of is not needed)
So multiplying the unique factors gives
The least common multiple is 18