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