¡Hola!
[tex][\dfrac{3}{7}\times \dfrac{5}{6}] \div \dfrac{3}{7} \\\\\ [ \dfrac{3\times5}{ 7\times6} ] \div \dfrac{3}{7} \\\\ \dfrac{15}{42}\div \dfrac{3}{7} \\\\ \dfrac{5}{14}\div \dfrac{3}{7}= \dfrac{\frac{5}{14}}{\frac{3}{7}}\\\\\\ \dfrac{5\times7}{14\times3}=\dfrac{35}{42} \\\\ =\boxed{\dfrac{5}{6}}[/tex]
Espero que sirva y saludos.
