1. **State the problem:** Calculate the sum of the fractions $-\frac{1}{5}$ and $\frac{3}{5}$. 2. **Formula and rules:** When adding fractions with the same denominator, add the numerators and keep the denominator the same. 3. **Apply the formula:** $$-\frac{1}{5} + \frac{3}{5} = \frac{-1 + 3}{5}$$ 4. **Simplify the numerator:** $$\frac{2}{5}$$ 5. **Final answer:** The sum is $\frac{2}{5}$. This means when you add $-\frac{1}{5}$ and $\frac{3}{5}$, you get $\frac{2}{5}$, which is a positive fraction.