Question

in scoala noastra sunt 79 de elevi inscrisi in clasele a treia in clasa a treia b sunt cu 5 elevi mai multi decat in a treia a dar cu 3 mai putin decat in a treia c cati elevi sunt in fiecare clasa

Answer 1

b=a+5                      b=c-3                       3a+5+5+3=79                                 3a+13=79                                3a=79-13=66                  a=22                            b=22+5=27                                      c=27+3=30