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17 April, 23:12

How to do subtracting by adding up

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Answers (2)
  1. 18 April, 01:18
    0
    like 18-20

    Step-by-step explanation:

    you add up 1 to 18 until u got 20
  2. 18 April, 02:47
    0
    Answer: I think you have to add a negative number by a positive number like - 10+5
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