The result of \( 279.78 + (-108.09) \) is approximately \( 171.69 \).

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Here are some related questions you might find interesting:
1. What is the sum of \( 345.67 + (-198.45) \)?
2. How do you subtract negative numbers from positive numbers?
3. What is the difference between \( 279.78 \) and \( 108.09 \)?
4. Can you explain the rules for adding and subtracting integers?
5. How would you calculate \( 279.78 - (-108.09) \)?

**Tip**: When adding a negative number, it's equivalent to subtracting its absolute value.

Learn how to add positive and negative numbers with this detailed solution for the sum of 279.78 + (-108.09). Understand key concepts such as adding signed numbers and applying basic arithmetic rules. Suitable for students in Grades 5-7.

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