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The result of the expression \( 10.9 + (-15.6) + 2.1 \) is \( -2.6 \) (rounded to one decimal place).

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Here are 5 related questions:
1. What happens when you add a negative number to a positive number?
2. How does adding decimals work with both positive and negative numbers?
3. How can rounding affect the final answer?
4. What is the difference between adding integers and decimals?
5. Can you express the result in fractional form?

**Tip:** Always line up the decimal points when adding or subtracting decimal numbers for clarity.

Add. Write your answer as a decimal. 10.9 + (–15.6) + 2.1 =

Learn how to add decimals with both positive and negative numbers in the expression 10.9 + (–15.6) + 2.1. This detailed solution is perfect for students in Grades 5-7 looking to understand decimal operations better.

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