1. We are asked to express the sum $5 + \frac{1}{y}$ as a single fraction. 2. To combine these terms, we need a common denominator. The denominator here is $y$. 3. Rewrite $5$ as $\frac{5y}{y}$ so it has the same denominator as $\frac{1}{y}$. 4. Now add the fractions: $$\frac{5y}{y} + \frac{1}{y} = \frac{5y + 1}{y}.$$ 5. The expression $5 + \frac{1}{y}$ as a single fraction is therefore $$\frac{5y + 1}{y}.$$