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Add the magnitudes together, and take the sign. Example: 4 + 5 {both are positive} so it's +9 {or just 9}. Now: -3 + -2 {both are negative}. Add the magnitudes (3 + 2 = 5) and take the sign, so it's -5.

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Negative integers are added as if they were positive, and the sum is negative.

7 + 8 = 15

-7 + (-8) = -15

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10y ago
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Q: How do you add integers with the same sign?
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