Răspuns:
[tex] = - \frac{23}{15 } \\ [/tex]
Explicație pas cu pas:
[tex] \frac{7}{15} - \Big( \frac{ {}^{3)} 3}{5} + \frac{ {}^{5)} 4}{3} + \frac{1}{15} \Big) = \frac{7}{15} - \Big( \frac{9}{15} + \frac{20}{15} + \frac{1}{15} \Big) = \frac{7}{15} - \frac{30}{15} = \bf{ - \frac{23}{15} } \\ [/tex]
