[tex]x \to masura \ primului \ unghi \\ y \to masura \ celui \ de-al \ 2lea \ unghi \\ z\to masura \ celui \ de-al \ 3lea \ unghi \\\\\\ x=y+25^0 \\ z=2y-9^0 \\\\\\ x+y+z=180^0 \\\\ y+25^0+y+2y-9^0=180^0 \\\\ 4y+16^0=180^0 \\\\ 4y=180^0-16^0 \\\\ 4y=164^0 \ \ \ |:4 \\\\ \boxed{y=41^0} \\\\\\ x=41^0+25^0 \\\\ \boxed{x=66^0} \\\\\\ z=2*41^0-9^0 \\\\ z=82^0-9^0 \\\\ \boxed{z=73^0}[/tex]
