Răspuns:
[tex] = \frac{169}{21} \\ [/tex]
Explicație pas cu pas:
[tex]2 \frac{5}{7} - \Big( - \frac{1}{3} \Big) + 5 \\ [/tex]
[tex] = \frac{2 \times 7 + 5}{7} + \frac{1}{3} + \frac{5}{1} \\ [/tex]
[tex] = \frac{ {}^{3)} 19}{7} + \frac{ {}^{7)} 1}{3} + \frac{{}^{21)} 5}{1} \\ [/tex]
[tex] = \frac{57}{21} + \frac{7}{21} + \frac{105}{21} = \frac{57 + 7 + 105}{21} = \boxed{\frac{169}{21} } \\ [/tex]
