12,12,13,6四个数用加减乘除怎么运算得24
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1: (12 × 13 - 12) ÷ 6
2: ((12 × 13) - 12) ÷ 6
3: (12 × 13 - 12 ) ÷ 6
4: ((12 × 13) - 12 ) ÷ 6
5: (13 × 12 - 12) ÷ 6
6: ((13 × 12 ) - 12) ÷ 6
7: (13 × 12 - 12 ) ÷ 6
8: ((13 × 12) - 12 ) ÷ 6
2: ((12 × 13) - 12) ÷ 6
3: (12 × 13 - 12 ) ÷ 6
4: ((12 × 13) - 12 ) ÷ 6
5: (13 × 12 - 12) ÷ 6
6: ((13 × 12 ) - 12) ÷ 6
7: (13 × 12 - 12 ) ÷ 6
8: ((13 × 12) - 12 ) ÷ 6
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