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13-11-2015
Mathematics

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Simplify this expression: 13 + (–12) – (–5) = ?
A. 6
B. –6
C. 30
D. –30

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Аноним Аноним

13-11-2015

Hi, the answer is A, 6. When you have 2 negative signs like: 1-(-5), it turns into 1+(+5). When you have to add a negative, like: 13+(-12), it turns into 13-(12)

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