Respuesta :
look at all and factor
45=3*3*5
60=2*2*3*5
78=2*3*13
84=2*2*3*7
99=3*3*11
common number is 3
factor is 3
45=3*3*5
60=2*2*3*5
78=2*3*13
84=2*2*3*7
99=3*3*11
common number is 3
factor is 3