7/9 (seven over nine) found by dividing the 77 and then the 99 by 11.
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11/19
To simplify 99/100, we need to find the greatest common factor (GCF) of the numerator and the denominator, which is 1. Therefore, 99/100 is already in its simplest form as it cannot be further reduced.
220/990=22/99=2/9
99/100
Since the number 19 is prime, it is impossible to cancel 19/99 down any further.