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(-79)÷2又1/4+4/9x(-29)
人气:167 ℃ 时间:2020-06-05 19:40:56
解答
=(-79)÷9/4+4/9×(-29)=(-79)×4/9+4/9×(-29)=4/9×(-79-29)
=4/9×(-108)=-48
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