No, 21 over 100 cannot be simplified.
To verify, factor each number down to its prime factorization.
21 = 3 * 7
100 = 2 * 2 * 5 * 5
Since they have no common factors, the fraction cannot be simplified.
Yes. It is 21/20.
no
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No, it cannot.
1over4
11 over 25
4/7
3/7
21/100 is in its simplest form.
6/21 = 2/7 simplified