Simplify. Express your answer as a single fraction in simplest \[ \frac{85}{5}+\frac{3}{5} \]

To simplify the expression, we first note that both fractions have the same denominator of 5. We can combine the numerators: \[ \frac{85 + 3}{5} \] Now, we add the numerators: \[ 85 + 3 = 88 \] Therefore, our expression becomes: \[ \frac{88}{5} \] This fraction is already in its simplest form, as 88 and 5 have no common factors other than 1. So the final answer is: \[ \frac{88}{5} \]