12
3/4 = 9/12 so LCD is 12.
The lowest common denominator of any set of whole numbers is 1
The LCD of 5/8 and 7/12 is 24.
The lowest common denominator is 12. The lowest common factor is 1.
36 is.
12
The lowest common factor of any set of positive integers is 1, but I think you might be looking for the lowest common denominator here. That's 24.
720 is.
84
60
720 is.