-- List all the factors of 14.
-- List all the factors of 35.
-- Sift out the group of numbers that show up on both lists.
-- Find the biggest number in the group. That's the GCF of 14 and 35 .
-- If it's not 7, then you made a mistake. Go back to square-1, rinse, and repeat.
The GCF is 1.
The Greatest Common Factor of 14, 35, 42 is 7.
The GCF is 1.
The GCF is 1.
The GCF is 7.
The GCF is 7.
The GCF is 7.
The GCF is: 7
The GCF is 1.
The GCF is 7.
The GCF is: 7
The GCF is 7.