21/40 cannot be reduced.
736 and 21 are comprime so the fraction cannot be reduced.
The fraction 19/21 cannot be reduced any more.
The fraction 21/100 cannot be reduced any more.
21/42 = 1/2
2/21
It is 21/25
The reduced fraction for 21/30 is 7/10
21/12 as a reduced fraction = 1.75
6/21 = 2/7 in simplest form
7/8
7 / 30