[tex]\frac{x}{4}=\frac{8}{10}\\\\10x=4\cdot8\\\\10x=32\ \ \ |:10\\\\x=3,2\\\\\\\\\frac{y}{9}=\frac{6}{9+4}\\\\\frac{y}{9}=\frac{6}{13}\\\\13y=9\cdot6\\\\13y=54\ \ \ |:13\\\\y=4\frac{2}{13}[/tex]
