Solutions by everydaycalculation.com

The LCM of 420 and 6860 is 20580.

- Find the prime factorization of 420

420 = 2 × 2 × 3 × 5 × 7 - Find the prime factorization of 6860

6860 = 2 × 2 × 5 × 7 × 7 × 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 × 7 × 7 - LCM =
**20580**

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Find least common multiple (LCM) of: 210 & 3430 84 & 1372 60 & 980 840 & 6860 1260 & 6860 2100 & 6860 2940 & 6860

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