You need at least two numbers to find a GCF.
Not possible to answer this without at least one other number.
First you find the factors of 45 and 60. The Factors of 45 are:1,3,5,9,15,and 45 The Factors of 60 are:1,2,3,4,5,6,10,12,15,20,30,60 The GCF is the highest common number so the GCF is 15.
The GCF is 6.
GCF: 12
The GCF is 20.
The GCF is 3.
The GCF is 2.
The GCF is 15.
The GCF is 10.
The GCF is 15.
The GCF is 4.
The GCF is 12.
The GCF of 45 and 60 is 15.First, you have to find the factors for 60 and 45. Then find what factors 60 and 45 have in common. What is the largest factor 60 and 45 have in common?Factors of 45 are 1 3 5 9 15 45Factors of 60 are 1 2 3 4 5 6 10 12 15 20 30 60The GCF of 45 and 60 is 15The GCF is 15.15.The GCF is 15.The GCF of 60 and 45 is 15.