8.6 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. And, since it is a decimal fraction, there is not another simpler decimal form. Its equivalent, in rational form, is 86/10 = 43/5.
86, like any integer, can be written as a fraction in simplest form by putting it over 1. 86% = 17/25
86% = 43/50
86/500
86% = 43/50
9.555... repeating as an improper fraction in its simplest form is 86/9
43/50
344 percent as a fraction in simplest form is 86/25. The mixed number is 311/25
8.6 is simple enough. If you meant the simplest fraction form, the answer is 86/10 = 43/5
86 is already in the simplest form.
86% is 86/100. In its simplest form this is 43/50.