The LCM is 60.
The GCF is 20.
The GCF is 6.
The GCF is 12.
It is: 60
To find the GCF and the LCM you have to first at least try to use prime factorization. So use factor trees. Or for the LCM find th least common multiples of the number.
The GCF is 4.
The greatest common factor of the numbers 45 and 60 is 15.
The greatest common factor of the numbers 60 and 75 is 15.
Trent is 40.
The LCM is: 385
The LCM is: 147