Răspuns:
40
Explicație pas cu pas:
(40x5-30x6) :2+(90x2:6) =
(200-30x6) :2+(90x2:6)=
(200-180) :2+(90x2:6)=
20:2+(90x2:6) =
20:2+(180:6) =
20:2+30=
10+30=
