79 is a Prime number. There is no common factor (other than 1) with 38 (whose prime factors are 19 and 2)
It is: 79-38 = 41
The GCF is 1.
The GCF of 38 and 76 is 38. Since 38 is a factor of 76, it is automatically the GCF.
The GCF is 2.
The GCF is 38.
The GCF is 1.
The GCF is 1.
Subtract 38 from 79: 79-38 = 41
The GCF of 38 and 76 is 38. Since 38 is a factor of 76, it is automatically the GCF.
It is: 79-38 = 41
The GCF is 2.
The GCF is 2.
The GCF is 2.
The GCF is 2.
The GCF is 22.
The GCF is 2.
The GCF is 2.