Răspuns :
a+(6x5)=82;a+30=82;a=82-30;a=52;b+(5x7)=40+2 ;40 este jumatatea lui80 :b+35=42;b=42-35;b=7
a+(6x5)+82= a+ 30=82 a=82-30 a=52 b+(5x7)=(80;2)+2 b+35=42 b=42-35 b=7