The GCF is 1.
The GCF is 31.
The GCF is 31.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
You need at least two numbers to find a GCF. If that's 3 and 7, the GCF is 1.
The GCF is 18.
The GCF of 31 and 6 is 1.
The GCF is 18.
The GCF is 31.
The GCF in this case is 3. 75 + 18 = 93 93/3 = 31 Rewriting 31 as another sum seems unnecessary, but sure. (30+1) * 3 = 93 = 75 + 18.