a) $$\frac{17}{5} = 3\frac{2}{5}$$
б) $$\frac{306}{10} = 30\frac{6}{10} = 30\frac{3}{5}$$
в) $$\frac{144}{9} = 16$$
Ответ: a) $$3\frac{2}{5}$$, б) $$30\frac{3}{5}$$, в) $$16$$