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-3的倒数是 .

-3的倒数是         .

 

【解析】根据倒数的定义:若两个数的乘积是1,我们就称这两个数互为倒数. ∴-3的倒数是
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直接写出下列方程的【解析】

6ec8aac122bd4f6e     ______________;        ②6ec8aac122bd4f6e      ___________;

6ec8aac122bd4f6e        ______________;           

 

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计算:

6ec8aac122bd4f6e______;     ②4-(-4)=_______;        ③6ec8aac122bd4f6e(_______)=6ec8aac122bd4f6e

6ec8aac122bd4f6e______;    ⑤6ec8aac122bd4f6e=_________;       ⑥6ec8aac122bd4f6e________.

 

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A、7         B、-1       C、 7,-1     D、7,-7                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

 

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10时整,钟表的时针和分针所成锐角是(    )

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6ec8aac122bd4f6e是关于6ec8aac122bd4f6e的方程6ec8aac122bd4f6e的解,则6ec8aac122bd4f6e的值为(   )

A.  6ec8aac122bd4f6e    B.6ec8aac122bd4f6e      C. 6ec8aac122bd4f6e      D. 6ec8aac122bd4f6e  

 

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