The GCF is 21.
The greatest common factor of 21 and 63 is 21.Since 21 is a factor of 63, it is automatically the GCF.
The GCF is 21.
The GCF is 21.
The GCF is 21.
The greatest common factor of the numbers 63, 105 and 294 is 21.
The GCF is 21.
The GCF is 3. The LCM is 63.
The GCF is 21.
The GCF is 21.
The GCF is 3.
21 and 63, respectively.