16 - ? - 8 = 8, 12 - ? - 6 = 6, 18 - ? - 9 = 9, 15 - ? - 7 = 8, 17 - ? - 9 = 8, 13 - ? - 6 = 7, 19 - ? - 12 = 7, 23 - ? - 17 = 6, 26 - ? - 18 = 8, 25 - ? - 16 = 9, 24 - ? - 19 = 5, 22 - ? - 15 = 7, 27 - ? - 19 = 8, 28 - ? - 18 = 10,

Missing Number Subtraction

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