3 x 5 = 15
3 x 7 = 21
Combine the factors, eliminating duplicates.
3 x 5 x 7 = 105, the LCM
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You need at least two numbers to find an LCM no matter what you use.
The prime factorization of 4 is 2 x 2. It is not possible to find the LCM of a single number.
The LCM of the given two numbers is 48
What is the prime authorization for LCM of 18,24
Two or more numbers are normally needed to find the LCM