[tex]a) \frac{1}{8} + \frac{3}{8} + \frac{8}{8} = \frac{8}{8} = 1 \\ b) \frac{2}{9} + \frac{3}{9} + \frac{4}{9} = \frac{9}{9} = 1 \\ c) \frac{1}{7} + \frac{2}{7} + \frac{4}{7} = \frac{7}{7} = 1 \\ d) \frac{1}{6} + \frac{2}{6} + \frac{3}{6} = \frac{6}{6} = 1[/tex]
coroana?
