Solutions by everydaycalculation.com

The LCM of 39 and 20 is 780.

- Find the prime factorization of 39

39 = 3 × 13 - Find the prime factorization of 20

20 = 2 × 2 × 5 - Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:

LCM = 2 × 2 × 3 × 5 × 13 - LCM =
**780**

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Find least common multiple (LCM) of: 78 & 40 117 & 60 195 & 100 273 & 140 78 & 20 39 & 40 117 & 20 39 & 60 195 & 20 39 & 100 273 & 20 39 & 140

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