GCF

= ﻿17's GCF is 1 i found it by picking a special friend. Than, i did all the factors by doing a factor rainbow. = = = = After that i circled all the common factors they have in common, they had 1 as a factor so 1 is the GCF of 17 and 34. It is as simple as that to find the GCF of 2 numbers this is how i found the GCF for 17 and my special friend (34). =