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A = (3 – 2) – (2 – 7) B = 3 – (6 – 2) + (– 5 + 2) C = 4 + 3 – 2 – (3 + 4) D = (– 2 + 4) – (3 – 7) + 3 – 5 + 1 E = 3 – (2 + 5) – (3 – 7) – 5 F = 1 – 4 + (3 + 5) – (2 + 7) + 2

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