Since 14 is a factor of 28, it is automatically the GCF.
What is the gfc of 6, 14
GCF(20, 28) = 4
The greatest (highest) common factor of 28 and 42 is 14.The GCF is 14.
4
It is 4
7
The GCF is 7.
7
It is: 1
The GCF is 2.
The GCF is 2.
The same as the GCF of 28 and 7 (7 is the remainder when you divde 63 by 28).