Answer:
14
Step-by-step explanation:
Note that 14 is a factor of 28 and also a factor of 56. Thus, 14 is the greatest common factor of 14, 28 and 56.
The common factors for 56,28,14 56 , 28 , 14 are −14,−7,−2,−1,1,2,7,14 - 14 , - 7 , - 2 , - 1 , 1 , 2 , 7 , 14 .
Hope that helps
