3 is the GCF of 12, 18, and 21. 3x4=12 3x6=18 3x7=21 3 is the GCF of 12, 18, and 21.
The GCF is 3.
It is: 1
The GCF is 3.
The GCF is 1.
The GCF is 3.
The GCF is 14.
The GCF is 3.
The GCF is 3.
The GCF is 3.
The GCF of 12 and 15 is 1
The GCF is 3.
The GCF is 1.
The GCF of 12 15 and 22 is 1.
GCF(12, 15, 18) = 3
GCF(15, 12, 45) = 3
The GCF of 9, 12, 15 is 3.