Solutions by everydaycalculation.com

The LCM of 28 and 90 is 1260.

- Find the prime factorization of 28

28 = 2 × 2 × 7 - Find the prime factorization of 90

90 = 2 × 3 × 3 × 5 - Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:

LCM = 2 × 2 × 3 × 3 × 5 × 7 - LCM =
**1260**

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Find least common multiple (LCM) of: 56 & 180 14 & 45 84 & 270 140 & 450 196 & 630 56 & 90 28 & 180 84 & 90 28 & 270 140 & 90 28 & 450 196 & 90 28 & 630

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