The GCF of 30 and 66 is 6.
The GCF is 3.
The GCF is 3.
The GCF of 3 and 6 is 3. The LCM is 6.
The same as the gcf of 6 and 3; where 3 is the remainder of the division of 75 by 6.
The GCF is 3.
The GCF of 6 and 81 is 3.
The GCF is 3.
The GCF is 3.
The GCF is 6.
The GCF is 3.
The GCF is 3.