The greatest common multiple of any set of integers is infinite.
225
3
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
It is: 450450
If I wanted to be nasty about it, I would say 1, because the least common denominator of 45/1 and 75/1 is 1. The least common denominator of two fractions is the least common multiple of their denominators. I presume you are asking for the least common multiple of 45 and 75, which is 225.
225The LCM is 225.
1575
Least Common Multiple (LCM) for 15 75 45 is 225.
LCM(45, 105, 75) = 1575.
There is no greatest common multiple, as the multiples are infinite. Their greatest common denominator is 15. Their lowest common multiple is 7650.
15, 30, 45, 60, 75, 90... Because 15 is a multiple of 3, every multiple of 15 is a common multiple of 3.
The factorization of 15 is 3 x 5. The factorization of 36 is 22 x 32. The factorization of 75 is 3 x 52. The least common multiple is the product of the highest powers of each number: 22 x 32 x 52 = 900