What is the gcf of 45, 18, and 39?
The Gcf of 45,18 and 39 is 3
The GCF is the greatest common factor that go into the three numbers 45, 18 and 39,3 into 45 is 153 into 18 is 63 into 39 is 13There is no other number that can go simultaneously into 15, 6 and 13.So the GCF of 45, 18 and 39 is 3.