Ответ:
- \(\frac{5m}{6n}:\frac{15m^2}{8}=\frac{5m}{6n}\cdot\frac{8}{15m^2}=\frac{4}{9mn}\).
- \(\frac{14}{9x^3}:\frac{7x}{2y^2}=\frac{14}{9x^3}\cdot\frac{2y^2}{7x}=\frac{4y^2}{9x^4}\).
- \(\frac{a^2}{12b}:\frac{ab}{36}=\frac{a^2}{12b}\cdot\frac{36}{ab}=\frac{3a}{b^2}\).
- \(\frac{3x}{10a^3}:\frac{1}{5a^2}=\frac{3x}{10a^3}\cdot 5a^2=\frac{3x}{2a}\).
- \(\frac{11x}{4y^2}:(22x^2)=\frac{11x}{4y^2}\cdot\frac{1}{22x^2}=\frac{1}{8xy^2}\).
- \(27a^3:\frac{18a^4}{7b^2}=27a^3\cdot\frac{7b^2}{18a^4}=\frac{21b^2}{2a}\).
- \(\frac{18c^4}{7d}:(9c^2d)=\frac{18c^4}{7d}\cdot\frac{1}{9c^2d}=\frac{2c^2}{7d^2}\).
- \(35x^5y:\frac{7x^3}{34}=35x^5y\cdot\frac{34}{7x^3}=170x^2y\).
Ответ: а) \(\frac{4}{9mn}\); б) \(\frac{4y^2}{9x^4}\); в) \(\frac{3a}{b^2}\); г) \(\frac{3x}{2a}\); д) \(\frac{1}{8xy^2}\); е) \(\frac{21b^2}{2a}\); ж) \(\frac{2c^2}{7d^2}\); з) \(170x^2y\).
