Răspunsuri

  • Utilizator Brainly
2014-03-05T19:11:29+02:00
F. I____I13I
B.I____I
 Sunt in total 27 elevi .
 27-13=14 suma partilor egale 
14:2=7 baieti
 7+13=20 fete 
Verificare : 20+7=27
asa am rezolvat eu
mersi
de la cine de la mine sau Jasminestefan?
tie
;)
2014-03-05T19:13:08+02:00
X-fetele
y-baietii⇔x+y=27⇔x=y+13⇔2y+13=27⇔2y=14⇔y=7⇔x=20.