The Greatest Common Factor of 28, 42, 63: 7
3The GCF is: 2121.The GCF is 21.
21
The GCF is 21.
The GCF is 21.
The GCF is 21.
It is: 3
The greatest common factor is 21
The GCF is 7.
The GCF is 21.
The GCF of 28, 42 and 63 is 7.The GCF is 7.
The greatest common factor (GCF) of 42 and 63 is 21.To find the GCF (greatest common factor) of two numbers, first prime factorize them.42 = 2*3*763 = 3*3*7The GCF must be able to contain factors such that if divided by 42 or 63, the answer will be an integer.The GCF is 21.21