Răspuns :
Răspuns:
Explicație pas cu pas:
[tex] \frac{1}{3} + \frac{2}{3} = \frac{1 + 2}{3} = \frac{3}{3} = 1 \\ [/tex]
[tex] \frac{3}{4} + \frac{4}{4} = \frac{3 + 4}{4} = \frac{7}{4} \\ [/tex]
[tex] \frac{2}{5} + \frac{4}{5} = \frac{2 + 4}{5} = \frac{6}{5} \\ [/tex]
[tex] \frac{3}{6} - \frac{2}{6} = \frac{3 - 2}{6} = \frac{1}{6} \\ [/tex]
[tex] \frac{5}{7} - \frac{2}{7} = \frac{5 - 2}{7} = \frac{3}{7} \\ [/tex]
[tex] \frac{2}{9} + \frac{3}{9} + \frac{1}{9} = \frac{2 + 3 + 1}{9} = \frac{6}{9} \\ [/tex]
[tex] \frac{2}{8} + \frac{3}{8} - \frac{4}{8} = \frac{2 + 3 - 4}{8} = \frac{1}{8} \\ [/tex]
[tex] \frac{8}{9} - \frac{1}{9} - \frac{5}{9} = \frac{8 - 1 - 5}{9} = \frac{2}{9} \\ [/tex]