1/2-1/3+1/4-1/6+1/8-1/9+1 - 知识问答

1/2-1/3+1/4-1/6+1/8-1/9+1/16-1/32

1个回答

1/2-1/3+1/4-1/6+1/8-1/9+1/16-1/32
=(1/2-1/3-1/6)+(1/4+1/8+1/16-1/32)-1/9
=0+(8/32+4/32+2/32-1/32)-1/9
=13/32-1/9
=117/288-32/288
=85/288

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