Solutions by everydaycalculation.com

The LCM of 70 and 42 is 210.

- Find the prime factorization of 70

70 = 2 × 5 × 7 - Find the prime factorization of 42

42 = 2 × 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 × 5 × 7 - LCM =
**210**

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Find least common multiple (LCM) of: 140 & 84 35 & 21 210 & 126 350 & 210 490 & 294 10 & 6 140 & 42 70 & 84 210 & 42 70 & 126 350 & 42 70 & 210 490 & 42 70 & 294

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