Răspunsuri

2014-07-28T16:11:07+03:00
X-nr de banci

4x+6-nr de elevi
5(x-6)-nr de elevi

4x+6=5x-36

4x-5x= -36-6

-x= -42

x=42 de banci

4*42+6= 168+6= 174 elevi