When looking for the GCF, ask yourself what numbers go into the smaller number. What goes into 14? Only 7 and 2, aside from 14 and 1, of course. So start with the largest of those numbers. Does 14 go into 36? No. Does 7? No. What about 2? Yes, 2 goes into 36 18 times evenly. 2 is therefore the greatest common factor.
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