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9 August, 00:00

Is - 7+9 = - 9+7 true false or open

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Answers (2)
  1. 9 August, 00:27
    0
    False: - 7+9=2 and - 9+7=-2 therefore 2≠-2
  2. 9 August, 00:27
    0
    The answer is false. - 7 + 9 is 2. - 9 + 7 is - 2
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