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36×12÷7-36÷1.4简便怎么计算
1天
人气:339 ℃ 时间:2020-02-20 15:00:43
解答
36×12÷7-36÷1.4
=36×12÷7-36÷7÷0.2
=36×12÷7-36×5÷7
=36÷7×(12-5)
=36÷7×7
=36×1
=36
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