Since 21 is a factor of 147, it is automatically the GCF.
GCF(147, 189) = 21.
The GCF of 105 and 147 is 21. Dividing 21 into each of these gives 5 and 7 respectively. These are not further divisible by any number except for 1.
The GCF is 21.
The GCF is 21.
The GCF is 21.
It is 21
21
Since 21 is a factor of 147, it is automatically the GCF.
The GCF is 21.
The GCF is 21.
It is: 3
The GCF is 21.