Răspuns :
_ _ baieti
_fete
287-26=261fete si baieti in competitie
261:3=87fete
87*2=174baieti
_fete
287-26=261fete si baieti in competitie
261:3=87fete
87*2=174baieti
f+b=287
f+b=287-26=261
f=b/2
b/2+b=261 aducem la acelasi numitor
b+2b=522
3b=522
b=174 f=87
f+b=287-26=261
f=b/2
b/2+b=261 aducem la acelasi numitor
b+2b=522
3b=522
b=174 f=87