Solutions by everydaycalculation.com

The LCM of 28 and 105 is 420.

- Find the prime factorization of 28

28 = 2 × 2 × 7 - Find the prime factorization of 105

105 = 3 × 5 × 7 - 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 × 7 - LCM =
**420**

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Find least common multiple (LCM) of: 56 & 210 84 & 315 140 & 525 196 & 735 4 & 15 56 & 105 28 & 210 84 & 105 28 & 315 140 & 105 28 & 525 196 & 105 28 & 735

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