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(18.5*3.6+3.6*2.5)÷0.18递等式计算
人气:412 ℃ 时间:2020-01-30 06:34:19
解答
(18.5*3.6+3.6*2.5)÷0.18
=3.6×(18.5+2.5)÷0.18
=3.6×21÷0.18
=75.6÷0.18
=420
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