Solutions by everydaycalculation.com

The LCM of 77 and 20 is 1540.

- Find the prime factorization of 77

77 = 7 × 11 - Find the prime factorization of 20

20 = 2 × 2 × 5 - Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:

LCM = 2 × 2 × 5 × 7 × 11 - LCM =
**1540**

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Find least common multiple (LCM) of: 154 & 40 231 & 60 385 & 100 539 & 140 154 & 20 77 & 40 231 & 20 77 & 60 385 & 20 77 & 100 539 & 20 77 & 140

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