[tex] \frac{1}{\frac{2}{3}} = \frac{\frac{1}{1}}{\frac{2}{3}} =\frac{1}{1} *\frac{3}{2} =\frac{3}{2}\\ \\\frac{\frac{2}{5}}{9} =\frac{\frac{2}{5}}{\frac{9}{1}} = \frac{2}{5} *\frac{1}{9} =\frac{2}{45} [/tex]
