Example: 30 and 42
Factor them.
2 x 3 x 5 = 30
2 x 3 x 7 = 42
Select the highest amount of each factor.
2 x 3 x 5 x 7 = 210, the LCM
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You need at least to numbers to find a least common multiple.
You need at least two numbers to find a least common multiple.
to find the least common multiple of two numbers you must list the factors then you can find out their least common multiple of the two numbers
Ten.
The least common multiple of 3 and 5 is 15. This, however is not a multiple of 2 so we must find the next common multiple of 3 and 5. This is 30. Since 30 is also a multiple of 2, 30 is therefore the least common multiple of 3, 5 and 2.