86 as a fraction is written as 86/1. This is because any whole number can be expressed as a fraction with the denominator as 1. In this case, 86 is the numerator and 1 is the denominator.
To understand this better, consider that a fraction represents a part of a whole. When the denominator is 1, it means the whole is divided into 1 part, which essentially means the whole itself. Therefore, 86/1 is equal to 86.
If you need to simplify or convert this fraction into a mixed number or decimal, you can do so. However, in its simplest form, 86 as a fraction remains 86/1.