1. **State the problem:** Simplify the expression $-5 - 5 + 6$. 2. **Apply the rules of addition and subtraction:** When adding and subtracting integers, combine the numbers step-by-step. 3. **Calculate step-by-step:** $$-5 - 5 + 6 = (-5 - 5) + 6$$ $$= -10 + 6$$ 4. **Final simplification:** $$-10 + 6 = -4$$ 5. **Answer:** The simplified result of the expression is $-4$.