The answer depends on what string is repeating. It is not clear from the question whether the recurring fraction meant to be 0.595959... or 0.599999...
If both digits are repeating then as a fraction it is 85/99 in its simplest form
If that is repeating 5 then in fraction form it is 1/18
.5 repeating in 5/9 in fraction form.
0.72 repeating written as a fraction in simplest form is 8/11
0.18... repeating is already a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its equivalent, in rational form, is 2/11.
If both digits are repeating then as a fraction it is 85/99 in its simplest form
As an improper fraction 53.333 ... repeating is 160/3
9.555... repeating as an improper fraction in its simplest form is 86/9
1/3 is the fraction form of 0.3 repeating.
.5 repeating in 5/9 in fraction form.
If that is repeating 5 then in fraction form it is 1/18
If you mean with both digits repeating then as a fraction it is 2/11 in its simplest form
0.72 repeating written as a fraction in simplest form is 8/11
1.1616... repeating is itself a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its equivalent, in rational form, is 115/99.
0.18... repeating is already a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its equivalent, in rational form, is 2/11.
-0.833... (repeating) is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its rational equivalent is -5/6.
If all three digits are repeating then as a fraction it is 41/333 in its simplest form