In the beginning we have to find Lcm
(Lcm of 4,6,3 & 12 is 12)
so
3/4 will be 9/12
3/6 will be 6/12
1/3 will be 4/12
2/12 will be 2/12
So, the order will be
2/12,4/12,6/12,9/12
Then we will return the numbers as they were before
So, the answer is
2/12,1/3,3/6,3/4