The factors of 12 are:
1, 2, 3, 4, 6, 12
The factors of 63 are:
1, 3, 7, 9, 21, 63
The common factors are:
1, 3
The Greatest Common Factor (GCF) is:
3
The GCF is 3.It is: 3
The GCF is: 63
The GCF is 21.
The GCF is 3.
The GCF is 3.
The GCF is 9.
The GCF is 9.
The GCF is 63.
The GCF is 1.
The GCF is 7.
The GCF is 9.
The GCF is 63.