No, because 21 is not divisible by 2.
3 over 2
(21/42) / 21 = 1/2
6/63 = 2/21 simplified
6/21 = 2/7
2/21
2 over 21
6/21 = 2/7 simplified
2/3
4 over 42. 2 over 21 cannot be simplified any further
Yes because 6/21 = 2/7
21 over 24 simplified is 7/8.
2/21 is in its simplest form.2/21 is in its simplest form.