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Latihan penjumlahan dan pengurangan

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  • 7 + ... = 9
    2
  • 6 - ... = 4
    2
  • 4 + ... = 8
    4
  • ... + 5 = 10
    5
  • 10 - ... = 3
    7
  • ... - 9 = 1
    10
  • ... - 2 = 7
    5
  • ... + 2 = 5
    3
  • 1 + ... = 7
    6
  • 9 - ... = 4
    5
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