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13-08-2016
Mathematics

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find 3+(-9) should you add or subtract 3 and 9? Why?

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dasetka dasetka

13-08-2016

For 3 + (-9), you should subtract 9 from 3. When you add a negative number it's the same thing as just subtracting said number. So, to solve this problem, you would change 3 + (-9) to 3 - 9, which is -6.

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