It is: 18/81 = 2/9 in its simplest form
18/81 = 2/9 simplified
If you mean 18/81 then it is 2/9 in its simplest form
99
18/81 = 2/9 (divide top and bottom by the hcf of 18 & 81 = 9)
81/18 = 9/2
2/9
2/9
81% means, = 81/100 -----------------------the simplest form
5/81 is the simplest form.
40/81 is in its simplest form.
64/81 is in its simplest form.