To solve the expression \(-86 + (-229)\), you need to add two negative numbers. When you add two negative numbers, you add their absolute values and then apply the negative sign to the result.

Here's the step-by-step solution:

1. Find the absolute values:  
   \(|-86| = 86\)  
   \(|-229| = 229\)  

2. Add the absolute values:  
   \(86 + 229 = 315\)  

3. Apply the negative sign to the sum:  
   \(-315\)

Thus,  
\[
-86 + (-229) = -315.
\]

Would you like more details, or do you have any questions about this?

### Related Questions:

1. What is the result of \(-150 + (-100)\)?
2. How do you add a positive and a negative number?
3. How do you subtract a negative number from a positive number?
4. What is the sum of \(-500 + (-200)\)?
5. How do you solve \(-86 - 229\)?

**Tip:** When adding two negative numbers, you always end up with a larger negative number because you're combining their magnitudes.

Learn how to solve the addition of negative numbers -86 + (-229) with a step-by-step solution. This problem covers adding two negative integers, including finding absolute values and applying the negative sign. Suitable for students in Grades 5-6.

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