Odpowiedź:
[tex]3\frac{2}{5}:1,7+\frac{4}{7}\cdot2\frac{1}{3}=3\frac{4}{10}:1,7+\frac{4}{7}\cdot\frac{7}{3}=3,4:1,7+\frac{4}{3}=2+1\frac{1}{3}=2\frac{1}{3}\\[/tex]