Question: Add.
-6 + (-5) = □
-6 + 3 = □
1. **State the problem:** We need to find the sums of $-6 + (-5)$ and $-6 + 3$.
2. **Recall the addition rules for integers:**
- Adding a negative number is like subtracting its absolute value.
- Adding a positive number increases the value.
3. **Calculate $-6 + (-5)$:**
$$-6 + (-5) = -6 - 5$$
$$= -(6 + 5)$$
$$= -11$$
4. **Calculate $-6 + 3$:**
$$-6 + 3 = -3$$
5. **Final answers:**
- $-6 + (-5) = -11$
- $-6 + 3 = -3$