1. **State the problem:** Simplify the expression $11(-5-3m)$. 2. **Formula and rules:** Use the distributive property: $a(b+c) = ab + ac$. 3. **Apply the distributive property:** $$11(-5-3m) = 11 \times (-5) + 11 \times (-3m)$$ 4. **Calculate each term:** $$11 \times (-5) = -55$$ $$11 \times (-3m) = -33m$$ 5. **Write the simplified expression:** $$-55 - 33m$$ **Final answer:** $-55 - 33m$