Solutions by everydaycalculation.com

The lcm of 28 and 42 is 84.

- Find the prime factorization of 28

28 = 2 × 2 × 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 × 2 × 3 × 7 - LCM =
**84**

Find least common multiple (lcm) of: 56 & 84 14 & 21 84 & 126 140 & 210 196 & 294 4 & 6 56 & 42 28 & 84 84 & 42 28 & 126 140 & 42 28 & 210 196 & 42 28 & 294

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