12 over 63 simplified = 4/21
54/63 = 6/7 simplified
63/64 cannot be simplified further.
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.
no
-475 over 60 simplified = -95/12
heh, well if you do the math you will find out and to my calculations, no it can not be simplified