Respuesta :
find factors of 18 and 30
18=3 times 3 itmes 2
30=3 times 2 times 5
find the ones common to both
3 times 2 is common to both
3 times 2=6=greatest common factor
18=3 times 3 itmes 2
30=3 times 2 times 5
find the ones common to both
3 times 2 is common to both
3 times 2=6=greatest common factor