It will be either
Which one of these depends on their highest common factor.
The LCM is: 200
The LCM of 30 and 42 is 210, a multiple of 7.
If one number is a multiple of another, then their LCM is the larger number.
The LCM is 200.
The LCM is 200.
The LCM is 200.
The LCM of these numbers is 200. LCM is Least Common Multiple.
The LCM is: 200
The LCM is 200.
The LCM is the higher number. The LCM of 9 and 18 is 18.
The LCM is the higher number. The LCM of 9 and 18 is 18.
The LCM is 200.