Respuesta :

Hint: Define FACTOR.

Then, define GREATEST. And COMMON.
Put it together now.

What number do they all have in common but is the greatest number smaller or equal to them?

Simplified: x[tex] \ \eq [/tex] that number.

Of course, 3.
smurfs2
3 because 3 goes into 3; 1 time 12 goes into 3; 4 times 18 goes into 3; 6 times GCF is 3