Respuesta :

1/9 = 2/18
if you divide 2/18 by 2 then you will find the answer 1/9.
In our equivalent fraction, we can cross multiply to find our answer:

1/? =2/18
1x18 = 2x?
18 = 2?
9 = ?

Therefore the missing number is 9: 
1/9 =2/18