Răspuns :
[tex]a) \\\frac{2}{9} + \frac{2}{9} = \frac{4}{9} \\ \frac{3}{8} + \frac{3}{8} = \frac{6}{8} \\ b) \\ \frac{9}{9} - \frac{5}{9} = \frac{4}{9} \\ \frac{9}{8} - \frac{3}{8} = \frac{6}{8} [/tex]
[tex]a) \\\frac{2}{9} + \frac{2}{9} = \frac{4}{9} \\ \frac{3}{8} + \frac{3}{8} = \frac{6}{8} \\ b) \\ \frac{9}{9} - \frac{5}{9} = \frac{4}{9} \\ \frac{9}{8} - \frac{3}{8} = \frac{6}{8} [/tex]