59-3=56 copii
fete = a
baieti=b
a=b+4
b+4+b=56
2b=56-4
2b=52
b=52:2
b=26=baieti
a=30=fete
Prietenii= a,b,c
a+b+c=93
b=a+1
c=a+2
a+a+1+a+2=93
3a+3=93
3a=90
a=90:3
a=30
b=31 Prietenii au varstele de
c=32 30,31,32 de ani
Nr trandafiri rosii=x
Nr trandafiri albi =y
x+y=57
x=y+3
y+3+y=57
2y=54
y=27 Trandafiri roșii =31
x=31 Trandafiri albi =27
Bafta !