0
Anonymous
21
Wiki User
The Greatest Common Factor of 28, 42, 63: 7
The highest common factor is 21
3The GCF is: 2121.The GCF is 21.
Answer: 7.
It is 21
The gcf is 21
It is: 3
The GCF is 21.
1 and 7
The greatest common factor is 21
The GCF is 7.