1,-1/2,2/3,-3/4,4/5,-5/6,____,_____找规律
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![1,-1/2,2/3,-3/4,4/5,-5/6,____,_____找规律](/uploads/image/z/6973261-61-1.jpg?t=1%2C-1%2F2%2C2%2F3%2C-3%2F4%2C4%2F5%2C-5%2F6%2C____%2C_____%E6%89%BE%E8%A7%84%E5%BE%8B)
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1,-1/2,2/3,-3/4,4/5,-5/6,____,_____找规律
1,-1/2,2/3,-3/4,4/5,-5/6,____,_____找规律
1,-1/2,2/3,-3/4,4/5,-5/6,____,_____找规律
6/7,-7/8
分子,分母都按加一递增,同时正负相间