Ответ:\(2\frac{1}{3}=\frac{2\cdot3+1}{3}=\frac{7}{3}\).\(4\frac{3}{5}=\frac{4\cdot5+3}{5}=\frac{23}{5}\).\(3\frac{9}{10}=\frac{3\cdot10+9}{10}=\frac{39}{10}\).\(10\frac{8}{17}=\frac{10\cdot17+8}{17}=\frac{178}{17}\).