1. **State the problem:** Find the value of $-1.4 - (-0.5)$. 2. **Rewrite the subtraction of a negative number:** Subtracting a negative is the same as adding its positive. So, $$-1.4 - (-0.5) = -1.4 + 0.5$$ 3. **Model on the number line:** Starting at $-1.4$, moving $0.5$ units to the right (because we add $0.5$). 4. **Calculate the sum:** $$-1.4 + 0.5 = -\cancel{1.4} + \cancel{0.5} = -0.9$$ 5. **Interpretation:** The result is $-0.9$, which matches the position on the number line after moving $0.5$ units right from $-1.4$. **Final answer:** $$\boxed{-0.9}$$