Ответ:

  1. Сокращаем степени: \(\frac{a^2}{b^6}\cdot\frac{b^2}{a^2}=\frac1{b^4}\).

  2. \(\frac{4m^2}{k^5}\cdot\frac{mk^5}{12}=\frac{m^3}{3}\).

  3. \(\frac{a}{2b}\cdot2a=\frac{a^2}{b}\).

  4. \(15x^{12}\cdot\frac{y^2}{5x^4}=3x^8y^2\).

  5. \(\frac{11x^3}{y^8}\cdot\frac{y^5}{33x^7}=\frac1{3x^4y^3}\).

  6. \(\frac{7k^8}{9mp}\cdot\frac{27m^3}{56k^6p^2}=\frac{3km^2}{8p^3}\).