54/63 = 6/7 simplified
It is already simplified and in its lowest terms as -51/70
51 and 40 are coprime so the ratio 51/40 cannot be simplified.
No.
4914/54 = 4914 ÷ 54 = 91
It is: 30/51 = 10/17
42/54 = 7/9
315/54= 105/16
33/54 = 11/18
87/54 = 29/18
51/100 cannot be simplified further.
51/48 = 3/4