Răspuns:
1)
[tex] \frac{1}{3 } + \frac{2}{3} = \frac{1 + 2}{3} = \frac{3}{3} = 1[/tex]
[tex] \frac{1}{5} + \frac{2}{5} + \frac{3}{5} = \frac{1 + 2 + 3}{5} = \frac{6}{5} = 1.2[/tex]
[tex] \frac{5}{36} + \frac{7}{36} + \frac{15}{36} = \frac{5 + 7 + 15}{36} = \frac{28}{36} [/tex]
[tex] \frac{10}{123} + \frac{5}{123} = \frac{10 + 5}{123} = \frac{15}{123} [/tex]
Scz voi scrie mai târziu celelalte exerciții.
Nu mai am timp.
