3
2 x 3 x 7 = 42
Since 42 is a multiple of 3, it is automatically the LCM of the pair.
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Least Common Multiple (LCM) for 96 108 180 is 4,320.
the LCM of 42 and 126 using a prime factorization is 2 times 2 times 3
These numbers are co-prime, ie have no common factor, so the LCM is the product, 312
3 and 17 are both prime. Any time you have prime numbers, you multiply them together to get the LCM.
The LCM of 54 and 210 is 26....Using the ladder method