Notez masurile unghiurilor cu x si y.
x+y=180 (grade)
[tex] \frac{x}{y} = \frac{3}{2} [/tex] => x=[tex] \frac{3y}{2} [/tex]
x+y=180 <=> [tex] \frac{3y}{2} + y=180 <=> \frac{3y}{2} + \frac{2y}{2} =180[/tex] <=> [tex] \frac{5y}{2} = 180 => y= \frac{2*180}{5} = 72[/tex] (grade) => y=108 grade.
Masurile unghiurilor sunt 108 grade si 72 grade.
