Question

In clasa 7A si 7B invata 64 de elevi.Daca doi elevi din clasa a 7-a A vor fi transferati in clasa a 7-a B,atunci in ambele clase va fi acelasi numar de elevi.Citi elevi invata in clasa a 7-a B?
Va rooog mult prin ecuatiie uregnt!!!(((

Answer 1

in clasa a 7-a B invata 30 de elevi.

Answer 2

x+y=64
x-2=y+2
3. x-y=4
4. x+y=64(adunam 3 cu 4)
obtinem:
2x=68
x=34
y=30
x-7A
y-7B