Yes
27/70
395/54 cannot be simplified.
54/63 = 6/7 simplified
It is: (3-54)/6 = -17/2 simplified
54/55 cannot be simplified.
4914/54 = 4914 ÷ 54 = 91
It is already simplified and in its lowest terms as -51/70
It is 54/66 which can be simplified, if required.
It is: 54/81 = 2/3
54 is 70% of 77.14
it cannot be simplified because there is no common factor of (5) and (70)
54