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(1+2+3)*8/56=0.78+?
人气:129 ℃ 时间:2020-02-05 23:06:13
解答
(1+2+3)*8/56=0.78+?
48/56-39/50
=6/8-39/50
=150/200-156/200
=-6/200
=-3/100
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