1. **State the problem:** Simplify the expression $-5d - 5(-0.8d - 0.7)$. 2. **Apply the distributive property:** Multiply $-5$ by each term inside the parentheses: $$-5d - 5 \times (-0.8d) - 5 \times (-0.7)$$ 3. **Calculate each multiplication:** $$-5d + 4d + 3.5$$ 4. **Combine like terms:** $$(-5d + 4d) + 3.5 = -1d + 3.5$$ 5. **Final simplified expression:** $$-d + 3.5$$