Solutions by everydaycalculation.com

The lcm of 6 and 20 is 60.

- Find the prime factorization of 6

6 = 2 × 3 - 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 - LCM =
**60**

Find least common multiple (lcm) of: 12 & 40 3 & 10 18 & 60 30 & 100 42 & 140 12 & 20 6 & 40 18 & 20 6 & 60 30 & 20 6 & 100 42 & 20 6 & 140

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