7 = 7
75 = 3 x 52
21 = 3 x 7
LCM of 7, 75, and 21 equals to 7 x 3 x 25 = 525.
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The least common multipleof 7 and 9 is 63.
Least common multiple of 75 and 95 is 1425.
The least common multiple of the numbers 9, 75 and 105 is 1,575.
525
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