Odpowiedź:
[tex](8 \frac{1}{5} - 5 \frac{2}{5} ) + 6 \frac{3}{5} = \\ = ( 7 \frac{6}{5} - 5 \frac{2}{5} ) + 6 \frac{3}{5} = 2 \frac{4}{5} + 6 \frac{3}{5} = \\ = 8 \frac{7}{5} = 9 \frac{2}{5} [/tex]
proszę o naj :)
[tex]8\frac{1}{5} - 5\frac{2}{5} = \frac{41}{5} - \frac{27}{5} = \frac{14}{5}\\\\\frac{14}{5} + 6\frac{3}{5} = \frac{14}{5} + \frac{33}{5} = \frac{47}{5} = 9\frac{2}{5}[/tex]
