8.25+【2.85-(三又五分之二-10.8乘九分之二)÷一又十四分之一
人气:180 ℃ 时间:2019-12-13 21:07:23
解答
8.25+[2.85-(三又五分之二-10.8乘九分之二)÷一又十四分之一=8.25+[2.85-(17/5-54/5*2/9)÷15/14]=8.25+[2.85-(17-12)/5×14/15]=8.25+[2.85-14/15]=33/4+[57/20-14/15]=33/4+(171-56)/60=33/4+115/60=33/4+23/1...
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