Respuesta :

I think the greatest common factor is 15
znk

Answer:

15  

Step-by-step explanation:

The factors of 75 are: 1,     3,     5,                    15,          25,        75

The factors of 90 are: 1, 2, 3,     5, 6, 9, 10,      15, 18,           30, 45, 90  

The factors of 120 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15,   20, 24, 30, 40, 60, 120

The greatest common factor is 15.