Since 6 is a factor of 90, it is automatically the GCF.
The GCF/HCF of 12 and 90 is 6.
The GCF of 90 and 6 is 6.
The GCF is 6.
The GCF is 6.
The GCF is 6.
The GCF is 6.
The GCF is 6.
The GCF is: 6
GCF of 84 90 and 210 is 6.
The GCF is 6.
The GCF is 6.
The GCF is: 6