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(-27又 9\11)\9-(1\2+2\3-3\4-11\12)*(-24)
人气:234 ℃ 时间:2020-04-05 07:43:03
解答
(-27又 9\11)\9-(1\2+2\3-3\4-11\12)*(-24)
=-27÷9-9/11÷9+(1/2*24+2/3*24-3/4*24-11/12*24)
=-3-1/11+(12+16-18-22)
=-3又1/11-12
=-15又1/11
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