30 - 5 × 6 =, 72 - 8 × 9 =, 42 - 6 × 7 =, 32 - 4 × 8 =, 18 - 3 × 6 =, 81 - 9 × 9 =, 12 - 2 × 6 =, 56 - 8 × 7 = , 24 - 6 × 4 =, 16 - 8 × 2 = ,

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