The GCF is 7.
The GCF of 28 and 63 is 7.
The GCF of 28, 42 and 63 is 7.The GCF is 7.
The GCF is 7.
7
It is: 7
The same as the GCF of 28 and 7 (7 is the remainder when you divde 63 by 28).
The GCF of 28, 36 and 52 is 4.
The same as the greatest common factor of 35 and 28 (where 28 is the remainder of the division of 63 by 35).
The GCF is 7.
The GCF is 1.
The GCF is 7.