Solutions by everydaycalculation.com

The LCM of 42 and 63 is 126.

- Find the prime factorization of 42

42 = 2 × 3 × 7 - Find the prime factorization of 63

63 = 3 × 3 × 7 - Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:

LCM = 2 × 3 × 3 × 7 - LCM =
**126**

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Find least common multiple (LCM) of: 84 & 126 126 & 189 14 & 21 210 & 315 294 & 441 6 & 9 84 & 63 42 & 126 126 & 63 42 & 189 210 & 63 42 & 315 294 & 63 42 & 441

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