Răspuns:
a + b
Explicație pas cu pas:
[tex]a = \frac{1}{5} + \frac{3}{5} + \frac{1}{5} + \frac{8}{5} - 1 = \frac{1 + 3 + 1 + 8 - 5}{5} = \frac{8}{5} \\ [/tex]
[tex]b = \frac{2}{5} + \frac{10}{5} - 1 + \frac{5}{5} - \frac{4}{5} = \frac{2 + 10 - 5 + 5 - 4}{5} = \frac{8}{5} \\ [/tex]
[tex]a + b = \frac{8}{5} + \frac{8}{5} = \frac{16}{5} = \bf 3 \frac{1}{5} \\ [/tex]
