Odpowiedź:
[tex]a) \frac{5}{8} + \frac{1}{8} = \frac{6}{8} = \frac{3}{4} \\ b) \frac{9}{20} + \frac{7}{20} = \frac{16}{20} = \frac{4}{5} \\ c) \frac{3}{25} + \frac{7}{25} = \frac{10}{25} = \frac{2}{5} \\ d) \frac{11}{13} + \frac{7}{13} = \frac{18}{13} = 1 \frac{5}{13} \\ e) \frac{15}{17} + \frac{7}{17} = \frac{22}{17} = 1 \frac{5}{17} \\ f) \frac{19}{25} + \frac{17}{25} + \frac{18}{25} = \frac{54}{25} = 2 \frac{4}{25} \\ g) \frac{8}{9} + \frac{7}{9} = \frac{15}{9} = \frac{5}{3} = 1 \frac{2}{3} \\ h) \frac{8}{10} + \frac{7}{10} = \frac{15}{10} = \frac{3}{2} = 1 \frac{1}{2} [/tex]
