{29/15 - (0.25+1/3)*7.2}/14/5
=[29/15-(1/4+1/3)*36/5]*5/14
=(29/15-7/12*36/5)*5/14
=(29/15-21/5)*5/14
=29/15*5/14-21/5*5/14
=29/42-3/2
=-34/42
=-17/21
{15/29 - (0.25+1/3)*7.2}/14/5
{15/29 - (0.25+1/3)*7.2}/14/5
数学人气:690 ℃时间:2020-01-31 02:01:40
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