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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
=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
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41.2X8.1+11X9.25+537X0.19=333.72+101.75+102.03=537.5
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展开全部
41.2X8.1+11X9.25+537X0.19
=41.2X8.1+1.1X92.5+53.7X1.9
=41.2x8.1+41.2x1.9+1.1x12.5+12.5x1.9+1.1x80
=41.2x(8.1+1.9)+12.5x(1.1+1.9)+1.1x80
=41.2x10+12.5x3+88
=412+37.5+88
=537.5
=41.2X8.1+1.1X92.5+53.7X1.9
=41.2x8.1+41.2x1.9+1.1x12.5+12.5x1.9+1.1x80
=41.2x(8.1+1.9)+12.5x(1.1+1.9)+1.1x80
=41.2x10+12.5x3+88
=412+37.5+88
=537.5
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333.72+101.75+102.03=537.5
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