8/81 can't be simplified any further.
81/100 cannot be simplified. the division = .81 though
15/81 can be simplified to 5/27
it is 3
No
No.
1 over 9
126/12 = 21/2 or 10.5
It is: 78/126 = 13/21 simplified
1/2
27/81 = 1/3
It is: 126/162 = 7/9 simplified