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15 October, 04:41

Samantha's teacher wrote the numbers 10,-2,4,-1,-7,1 on the smart board. The teacher asked which number should she write in order to make the sum of all the numbers equal to zero

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  1. 15 October, 05:40
    0
    Let the unknown addend be x.

    Sum up the given numbers { 10,-2,4,-1,-7,1}: 8 + 3 - 6 = 11-6 = 5

    Then 5 + x = 0 and x = - 5
  2. 15 October, 08:08
    0
    I think that the answer is 5. But, it could be some thing else
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