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1.8*25+24/1.5用简便方法怎么做
人气:148 ℃ 时间:2020-06-13 01:53:54
解答
1.8*25+24/1.5
=(2-0.2)*25+(3*8)/(3*0.5)
=2*25-0.2*25+8/0.5
=50-5+16
=45+16
=61
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