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[tex](-1)^{6} + \frac{7}{3} ( \frac{1}{7} - \frac{2}{25} : \frac{7}{5} )= [/tex]

Răspuns :

   
[tex]\displaystyle\\ (-1)^{6}+\frac{7}{3}\left(\frac{1}{7}-\frac{2}{25}:\frac{7}{5}\right)=\\\\ =1+\frac{7}{3}\left(\frac{1}{7}-\frac{2}{25}\times\frac{5}{7}\right)=\\\\ =1+\frac{7}{3}\left(\frac{1}{7}-\frac{2}{5}\times\frac{1}{7}\right)=\\\\ =1+\frac{7}{3}\left(\frac{1}{7}-\frac{2}{35}\right)=\\\\ =1+\frac{7}{3}\left(\frac{5}{35}-\frac{2}{35}\right)=\\\\ =1+\frac{7}{3}\times\frac{5-2}{35}=1+\frac{7}{3}\times\frac{3}{35}=1+\frac{1}{5}= \boxed{1\frac{1}{5}}=\boxed{\frac{6}{5}}[/tex]