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The problem asks you to evaluate the expression:  
**18 ÷ (-6) + (-12).**

### Step-by-step solution:
1. **Follow the order of operations (PEMDAS):**
   - Parentheses
   - Exponents
   - Multiplication and Division (from left to right)
   - Addition and Subtraction (from left to right)

2. **Division first:**  
   \( 18 \div (-6) = -3 \)

3. **Addition next:**  
   \(-3 + (-12) = -15\)

### Final Answer:
The correct evaluation of the expression is **\(-15\)**.

Would you like further explanation or practice with similar problems?  

### Related Questions:
1. What is the result of \( 24 \div (-8) + (-10) \)?
2. How does dividing by a negative number affect the sign of the quotient?
3. How can you verify your work for problems involving integers?
4. What happens when you add two negative numbers?
5. Can you explain why the order of operations is crucial in this problem?

### Tip:
Always simplify one operation at a time and double-check signs when working with negative integers!

Learn how to evaluate the expression 18 ÷ (-6) + (-12) using the order of operations. This step-by-step guide simplifies the problem, covering division with integers and addition of negative numbers. Suitable for middle school students (Grades 6-8).

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