To simplify the expression $-(8d - 3w)$, we distribute the negative sign to each term inside the parentheses:

$-(8d - 3w) = -8d + 3w$

So, the simplified form of the expression is:

$-8d + 3w$

Would you like further details or have any other questions?

Here are some related questions to explore:

1. How do you simplify expressions involving parentheses?
2. What is the difference between distributing a positive and negative sign?
3. How would this expression change if we had $-(3w - 8d)$?
4. What happens if we apply this process to more complex expressions?
5. Can you simplify $-(5x - 7y + z)$?

Tip: Always check the sign in front of parentheses carefully; it affects all terms inside!