枫花涅磐
幼苗
共回答了1个问题 举报
41.2*8.1+11*9.25+537*0.19
=41.2*8.1+53.7*1.9+11*9.25
=41.2*(10-1.9)+53.7*1.9+11*9.25
=41.2*10-(41.2-53.7)*1.9+11*9.25
=412+12.5*1.9+11*9.25
=412+(1.1+0.8)*12.5+1.1*92.5
=412+10+(12.5+92.5)*1.1
=422+(100+5)*1.1
=422+110+5.5
=537.5
1年前
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