Factors of 15: 1, 3, 5, and 15.
Factors of 6: 1, 2, 3, and 6.
Common factors (numbers on both lists): 1 and 3.
Greatest common factor: 3 .
The GCF is 3.
The GCF of 6 and 15 is 3. 6/15 = 2/5
The GCF is 15.
The GCF is 3.
The GCF is 3.
The GCF is 3.
The GCF is 1.
The GCF is 1.
The GCF is 3.
The GCF is 3.
The GCF is 3.
The GCF is 3.