Chapter 9 - Basic Algebra - 9.2 Adding and Subtracting Signed Numbers - 9.2 Exercises - Page 638: 14

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To add $11+(-3)$, we can take the absolute value of both numbers. $|11|=11$ $|-3|=3$ Next, we can subtract the lesser absolute value from the greater absolute value. $11-3=8$ The number with the greater absolute value is positive, so the result will be positive. Therefore, $11+(-3)=8$.