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计算:34.23-[194.6-(5.77-5.4)]
人气:262 ℃ 时间:2020-03-25 09:07:28
解答
34.23-[194.6-(5.77-5.4)]
=34.23-(194.6-5.77+5.4)
=34.23+5.77-194.6-5.4
=40-200
=-160
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