题目内容

计算:(16分)
(1)                    (2)
(3)                     (4)
(1)                    (2)
解:原式="-23+58+5            " 解:原式=      
="40                            " =-
(3)                     (4)
解:原式=-×36-×36+×36         解:原式=-1-×〔3-9〕
="-18-30+21                               " =-1+1
="-27                                     " =0
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