How do you find the least common multiple of 9, 6, and 2?

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Answer 1 · 2017-01-15T02:08:48

Factor each number to its prime factors multiply all the prime factors together, use each prime number only once.

9 can be factored into # 3 xx 3# so nine has two factors of 3

6 can be factored into # 3 xx 2 # so nine has one factor of 3 and one factor of 2.

( 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 # 2 xx 1 # so 2 has one factor o2

( since six already has a factor of 2 the second factor of is not needed)

So multiplying the unique factors gives

# 3 xx 3 xx 2 = 18#