9/11
Expressed as a proper fraction in its simplest form, by dividing the numerator and denominator by 6, 54/66 becomes 9/11 or nine elevenths.
It is already in its simplest form.
9/11 nine over eleven
It is: 46/66 = 23/33
It is: 88/66 = 4/3
11/66 = 1/6
46/66 = 23/33
18/66 = 3/11
33/66 = 1/2
17 over 33
5 over 6