Ответ:
а) \(x=\frac{3}{5}:1\frac{2}{3}=\frac{3}{5}:\frac{5}{3}=\frac{3}{5}\cdot\frac{3}{5}=\frac{9}{25}\).
б) \(x=1\frac{2}{3}:1\frac{7}{9}=\frac{5}{3}:\frac{16}{9}=\frac{5}{3}\cdot\frac{9}{16}=\frac{15}{16}\).
Ответ: а) \(x=\frac{9}{25}\); б) \(x=\frac{15}{16}\).
