8 - 67 + X = 75, 53 - 34 + 19 = X, 70 - X - 22 = 48, 52 - 97 - X = 45, 55 - 13 + C = 68, 65 - D - 56 = 9, 17 - B + 17 = 34, 56 - 71 - 15 = X, 42 - 37 + A = 79, 64 - C - 11 = 53,

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