Solutions by everydaycalculation.com

The LCM of 3 and 4 is 12.

- Find the prime factorization of 3

3 = 3 - Find the prime factorization of 4

4 = 2 × 2 - Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:

LCM = 2 × 2 × 3 - LCM =
**12**

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Find least common multiple (LCM) of: 6 & 8 9 & 12 15 & 20 21 & 28 6 & 4 3 & 8 9 & 4 3 & 12 15 & 4 3 & 20 21 & 4 3 & 28

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