[tex]Notez~cu~x~si~y~masurile~celor~doua~unghiuri~(exprimate~in \\ \\ grade~;~x\ \textgreater \ y). \\ \\ x-y=36 \\ \\ x+y=180 \\ \\ (x-y)+(x+y)=36+180 \\ \\ 2x=216 \Rightarrow x= 108 \textdegree. \\ \\ y=180-x=180-108=72 \textdegree.[/tex]
[tex]Masura~unghiului~mai~mic~este~egala~cu~72 \textdegree.[/tex]