Respuesta :

the gcf of 40 and 60 is 2.
-steps:        
     40: 1, 2, 4, 5, 8, 10, 20, and 40
     60: 1, 2, 3, 6, 11, 22, 33, and 66
in the factors of both numbers only number 2 is the common number, so 2 is the gcf of 40 and 66
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