有线电视电话客服热线:1/6+1/24+1/60+1/40=

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写出简便过程

1/6+1/24+1/60+1/40
=4/24+1/24+2/120+3/120
=5/24+5/120
=5/24+1/24
=6/24
=1/4

0.25

1/6+1/24+1/60+1/40=1/4

1/6+1/24+1/60+1/40= 1/6 =1/( )+1/( )+1/( ) 1/24+1/120+1/360+1/840+1/630=? 1/2+1/6+1/12+1/20+1/30 1/6+1/8+1/10+1/12+..........+1/202=? 1/2 ，1/3 ,1/6 /1/6 ,() 1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90= 1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90=? 1/24+1/120+1/360+1/630 1，4，5，6用+-/*算24