No.
12 over 63 simplified = 4/21
63/64 cannot be simplified further.
It is: 63/60 = 21/20 simplified
54/63 = 6/7 simplified
6/63 = 2/21 simplified
45/63 is 5/7 simplified
The simplified fraction of 15 over 63 is 5/21
2/63
41/63
no
The fraction 22 over 63 cannot be simplified further because 22 and 63 have no common factors other than 1. Therefore, 22 over 63 in its simplest form remains 22/63.
21/63 = 1/3