Answer:
3
Explanation:
you have 1/3, to find out how many ninths you have, you must multiply the denominator by three (because 3*3=9). whatever you multiply on the bottom you must multiply on the top (if you don't do that then it's not the same as 1/3 anymore)
therefore 1/3 == (1*3)/(3*3) == 3/9
if you want to know how many twelves it was then you multiply by 4 to get 12 on the bottom:
1/3 == (1*4)/(3*4) == 4/12
therefore 1/3 == 3/9 == 4/12. they are all the same fraction