怎么样简便怎么计算18%*(9分之1+3分之1)(4+12%)*15(15分之8+12分之5)*40分之1
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怎么样简便怎么计算18%*(9分之1+3分之1)(4+12%)*15(15分之8+12分之5)*40分之1
怎么样简便怎么计算
18%*(9分之1+3分之1)
(4+12%)*15
(15分之8+12分之5)*40分之1
怎么样简便怎么计算18%*(9分之1+3分之1)(4+12%)*15(15分之8+12分之5)*40分之1
18%*(9分之1+3分之1)
=18%*1/9+18%*1/3
=0.02+0.06
=0.08
(4+12%)*15
=4*15+12%*15
=60+1.8
=61.8
(15分之8+12分之5)*40分之1
=8/15*1/40+5/12*1/40
=1/75+1/96
=32/2400+25/2400
=57/2400
原式=18%*1/9+18%*1/3=2%+6%=8%
原式=4*15+3%*4*15=60+0.03*60=60+1.8=61.8
原式=8/15*1/40+5/12*1/40=1/75+1/96=(32+25)/2400=57/2400=19/800
I DONG'T NOW
0.18x(1/9)+0.18x(1/3)=0.02+0.06=0.08
4x14+(3/25)x15=60+(9/5)=61.8
(8/15)x(1/40)+(5/12)x(1/40)=(1/75)+(1/76)=(75+76)/(75x76)
18%*(1/9+1/3) (4+12%)*15 (8/15+5/12)*1/40
= 18%*1/9+18%*1/3 =4*15+12%*15 =(32/60+25/60)*1/40
=2%+6% =60+1.8 ...
全部展开
18%*(1/9+1/3) (4+12%)*15 (8/15+5/12)*1/40
= 18%*1/9+18%*1/3 =4*15+12%*15 =(32/60+25/60)*1/40
=2%+6% =60+1.8 =57/60*1/40
=8% =61.8 =19/20*1/40
=0.08 =19/800
收起