The GCF is 1.
gcf(15, 9, 19) = 1.
The GCF of 9, 12, 15 is 3.
The GCF is 3.
The GCF is 3.
The GCF is 3.
The GCF is 1.
The GCF of 4, 9, and 15 is 1.
The GCF is 3.
The GCF is 1.
The GCF is 1.
The highest common factor of 9 and 15 is 3.(3*3) and (5*3)Factors of 9: 1 3 9Factors of 15: 1 3 5 15The GCF is 3.The GCF is 3.