1/3..1/6+1/12+1/24+1/..1/48+1/
展开全部
1/3+1/6+1/12+1/24+1/48+1/96
=1/3+1/6+1/12+1/24+1/48+1/96+1/96-1/96
=1/3+1/6+1/12+1/24+1/48+1/48-1/96
=1/3+1/6+1/12+1/24+1/24-1/96
=1/3+1/6+1/12+1/12-1/96
=1/3+1/6+1/6-1/96
=1/3+1/3-1/96
=2/3-1/96
=64/96-1/96
=63/96
=21/32
=1/3+1/6+1/12+1/24+1/48+1/96+1/96-1/96
=1/3+1/6+1/12+1/24+1/48+1/48-1/96
=1/3+1/6+1/12+1/24+1/24-1/96
=1/3+1/6+1/12+1/12-1/96
=1/3+1/6+1/6-1/96
=1/3+1/3-1/96
=2/3-1/96
=64/96-1/96
=63/96
=21/32
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