SOLUTION: what is the least common multiple of 18 and 72?

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Question 265230: what is the least common multiple of 18 and 72?
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
18 = 2 x 2 x 3
72 = 2 x 2 x 2 x 3 x 3
The biggest group of 2's is 2 x 2 x 2
The biggest group of 3's is 3 x 3
so the LCM is 2 x 2 x 2 x 3 x 3 = 72