1. **State the problem:** Simplify the expression $$-k - (-8k + 7)$$ to find an equivalent expression. 2. **Recall the rule:** When subtracting a quantity in parentheses, distribute the minus sign to each term inside the parentheses. 3. **Apply the rule:** $$-k - (-8k + 7) = -k + 8k - 7$$ 4. **Combine like terms:** $$-k + 8k = 7k$$ 5. **Write the simplified expression:** $$7k - 7$$ 6. **Match with the given options:** The equivalent expression is option A: $$7k - 7$$.