Răspuns :
50 - 2 = 48 elevi sunt int-un autocar
3 x 48 = 144 elevi au mers in excursie
sau
3 x 50 - 3 x 2= 150 - 6 =144 elevi
→ 6 cadre didactice
3 x 48 = 144 elevi au mers in excursie
sau
3 x 50 - 3 x 2= 150 - 6 =144 elevi
→ 6 cadre didactice