Odpowiedź:
Równanie wygląda tak
[tex]\left \{ {{2a+b=80} \atop {2b+a=97}} \right.[/tex]
[tex]\left \{ {{b=80-2a} \atop {2(80-2a)+a=97}} \right.[/tex]
[tex]\left \{ {{b=80-2a} \atop {160-3a=97}}\right.[/tex]
[tex]\left \{ {{a=21} \atop {b=80-42}} \right.[/tex]
[tex]\left \{ {{a=21} \atop {b=38}} \right.[/tex]
Pozdrawiam
