Solutions by everydaycalculation.com

The LCM of 15 and 39 is 195.

- Find the prime factorization of 15

15 = 3 × 5 - Find the prime factorization of 39

39 = 3 × 13 - Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:

LCM = 3 × 5 × 13 - LCM =
**195**

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Find least common multiple (LCM) of: 30 & 78 45 & 117 5 & 13 75 & 195 105 & 273 30 & 39 15 & 78 45 & 39 15 & 117 75 & 39 15 & 195 105 & 39 15 & 273

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