简便计算.12除以3/10*百分之50,[百分之65+(百分之25+2/3)]*3/2

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简便计算.12除以3/10*百分之50,[百分之65+(百分之25+2/3)]*3/2简便计算.12除以3/10*百分之50,[百分之65+(百分之25+2/3)]*3/2简便计算.12除以3/10*

简便计算.12除以3/10*百分之50,[百分之65+(百分之25+2/3)]*3/2
简便计算.12除以3/10*百分之50,[百分之65+(百分之25+2/3)]*3/2

简便计算.12除以3/10*百分之50,[百分之65+(百分之25+2/3)]*3/2
12除以3/10*百分之50,
=12*10/3*0.5
=40*0.5
=20
[百分之65+(百分之25+2/3)]*3/2
=(65%+25%+2/3)*3/2
=90%*3/2+2/3*3/2
=1.35+1
=2.35

20
69/40

12/(3/10)*50%,
=12*10/3*0.5
=40*0.5
=20
[65%+(25%+2/3)]*3/2
=(65%+25%+2/3)*3/2
=9/10*3/2+2/3*3/2
=27/20+1
=47/20