notam:
e=nr elevi
b=nr banci
e=2*b+5
e=4*(b-6)+3 =>
2*b+5=4*(b-6)+3
2b+5=4b-24+3
2b+5=4b-21/-5
2b=4b-26/+26
2b+26=4b/-2b
2b=26/:2=>
b=13 banci
inlocuim in relatia e=2*b+5
e=2*13+5
e=31
Raspuns final:
31 de elevi si 13 banci
Sper ca te am ajutat, spor la scoala<3