Răspuns :
40 elevi - drumetie
40:5=8 elevi ajuta la cantina
70-(40+8)=70-48=22 elevi participa la jocuri
40+8+22=48+22=70 elevi
40:5=8 elevi ajuta la cantina
70-(40+8)=70-48=22 elevi participa la jocuri
40+8+22=48+22=70 elevi