Answer:
99/1000
Explanation:
This is as simple as this fraction can go
99 = 3*33 = 3*3*11
1000 = 250*4 = 125*2*2*2 = 25*5*2*2*2 = 5*5*5*2*2*2
Since there are no factors in common, it cannot be reduced
5.8m questions
7.5m answers