Question

GFC of 35x6 and 7x2

Answer 1

Greates common factors are the highest factor you can pull out of a number. In your case

35 x 6 = 210
and
7 x 2 = 14

In your case, 14 is the GCF

The easiest way to do this is to lay out all the numbers you can multiply by in order to get the product. Then look for the highest shared number.