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4789怎么列算式等于24

(4+8)×(9-7) =12×2 =24

【7-(9-8)】*4

(1)4789-5768÷56×27,=4789-103×27,=4789-2781,=2008;(2)(5.1÷0.17+4.2)×4.5,=(30+4.2)×4.5,=34.2×4.5,=153.9;(3)(0.75-316)×(29+13),=916×59,=516;(4)13÷[(23+15)×313],=13÷[1315×313],=13÷15,=53.

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