You need at least two numbers to find an LCM.
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The GCF is 15.
450
The LCM is: 1,080
LCM(45, 105, 75) = 1575.
1, 3 is next.* * * * *That is the least common factor (which is a meaningless concept), not the least common multiple!LCM(15, 45, 75) = 225