Odpowiedź:
[tex]b) 1\frac{2}{5} + \frac{4}{5} = 1 \frac{6}{5} = 2\frac{1}{5}[/tex]
[tex]c) 4\frac{4}{7} + \frac{3}{7} = 4 \frac{7}{7} = 5[/tex]
[tex]d) 5\frac{5}{8} + 3\frac{7}{8} = 8\frac{12}{8} = 9\frac{4}{8} = 9\frac{1}{2}[/tex]
[tex]e) 6\frac{8}{9} + 7\frac{4}{9} = 13\frac{12}{9} = 14\frac{3}{9} = 14\frac{1}{3}[/tex]
[tex]f) 7\frac{3}{5} + 2\frac{2}{5} = 7 \frac{5}{5} = 8[/tex]
