1/42+1/56+1/72+1/90+1/110怎么计算
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1/42+1/56+1/72+1/90+1/110怎么计算1/42+1/56+1/72+1/90+1/110怎么计算1/42+1/56+1/72+1/90+1/110怎么计算1/42+1/56+1/7
1/42+1/56+1/72+1/90+1/110怎么计算
1/42+1/56+1/72+1/90+1/110怎么计算
1/42+1/56+1/72+1/90+1/110怎么计算
1/42+1/56+1/72+1/90+1/110
=1/6-1/7+1/7-1/8+1/8-1/9+1/9-1/10+1/10-1/11
=1/6-1/11
=5/66
手机提问的朋友在客户端右上角评价点【满意】即可.
用1/6一1/11=5/66
1/42=1/6-1/7 1/56=1/7-1/8 1/72=1/8-1/9 1/90=1/9-1/10 1/11...
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1/42=1/6-1/7 1/56=1/7-1/8 1/72=1/8-1/9 1/90=1/9-1/10 1/110=1/10-1/11 全部加起来 原式=(1/6-1/7)+(1/7-1/8)+(1/8-1/9)+(1/9-1/10)+(1/10-1/11) =1/6-1/11
=5/66
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42/1+56/1+72/1+90/1+110/1
1/42+1/56+1/72+1/90十1/110怎么计算
1/42+1/56+1/72+1/90+1/110怎么计算
1-1/6+1/42+1/56+1/72
递等式计算:1/42+1/56+1/72+1/90+1/110
1/42+1/56+1/72+1/90+1/110
1/30+1/42+1/56+1/72+1/90
1/42+1/56+1/72+1/90+1/110
1/30+1/42+1/56+1/72+1/90
1/42+1/56+1/72+1/90+1/110
1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90
能简算的要简算 1/30+1/42+1/56+1/72能简算的要简算 1/30+1/42+1/56+1/72
42分之1+56分之1+72分之1+90分之1+110分之1+132分之1我有急用
1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110=?详细
42/1 + 56/1 +72/1 + 90/1 + 110/1 + 132/1=?错了,是1/42+1/56+1/72+1/90+1/110+1/132
1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90简便运算怎么做
1/12+1/20+1/30+1/42+1/56+1/72+1/90
1/12+1/20+1/30+1/42+1/56+1/72+1/90