It is: 4
The GCF is 4.
GCF(72, 44) = 4.
The GCF is 4.
The greatest common factor (GCF) of 68 and 72 is 4.
The GCF is 4.
The GCF is 4.
The GCF is 4.
The GCF is 4.
The GCF is 4.
The GCF is 4.
The GCF of 16 and 72 is 8. 16/72 can be reduced to 2/9
Using the GCF between 4 and 72 (which is 4) you can simplify the fraction to 1/18