The GCF is 15.
The greatest common factor of 45 and 105 is 15.
15
The GCF is 15.
15
The GCF is 15.
The GCF is 15.
The GCF is 45.
The GCF is 15.
You need to find work out the factors of both 45 and 105 separately, and then find which match both numbers. 45 - 1, 3, 5, 9, 15, 45 105 - 1, 3, 5, 7, 15, 21, 35, 105 The numbers that match both 45 and 105 are 1, 3, 5, and 15. 15 would therefore be called the Greatest Common Factor (GCF).
The greatest (or largest) factor of 45 is 45. The next largest factor is 15.
prime factor all 3 45=3*3*5 75=3*5*5 105=7*3*5 Select the common factors 3*5 = 15, the GCF
The greatest common factor of 45 and 225 is 15.The GCF is: 45