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(—131/3)x1/5+(—62/3)×1/5+(+1961/7)/-(+761/7)/5计算你们可以写到纸上别嫌麻烦哈
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(—131/3)x1/5+(—62/3)×1/5+(+1961/7)/-(+761/7)/5 计算 你们可以写到纸上 别嫌麻烦哈
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答案和解析
(—131/3)x1/5+(—62/3)×1/5+(+1961/7)/5-(+761/7)/5
=(-131/3-62/3+1961/7-761/7)×1/5
=(-193/3+1200/7)×1/5
=-193/3×1/5+1200/7×1/5
=-193/15+400/7
=4649/105
=(-131/3-62/3+1961/7-761/7)×1/5
=(-193/3+1200/7)×1/5
=-193/3×1/5+1200/7×1/5
=-193/15+400/7
=4649/105
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