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(九百九十九又 8/9+1/9)+(九十九又 8/9+1/9)+(九又8/9+1/9)
人气:486 ℃ 时间:2020-04-07 17:19:04
解答
(九百九十九又 8/9+1/9)+(九十九又 8/9+1/9)+(九又8/9+1/9)
=999+8/9+1/9+99+8/9+1/9+9+8/9+1/9
=999+1+99+1+9+1
=1110
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