Solutions by everydaycalculation.com

The LCM of 20 and 23 is 460.

- Find the prime factorization of 20

20 = 2 × 2 × 5 - Find the prime factorization of 23

23 = 23 - Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:

LCM = 2 × 2 × 5 × 23 - LCM =
**460**

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Find least common multiple (LCM) of: 40 & 46 60 & 69 100 & 115 140 & 161 40 & 23 20 & 46 60 & 23 20 & 69 100 & 23 20 & 115 140 & 23 20 & 161

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