Question

Daca intr-o clasa se aseaza cate 2 elevi intr-o banca raman 6 elevi in picioare . Daca se aseaza cate 3 intr-o banca raman 4 bani goale . Cate bani si cati elevi sunt in clasa?

Answer 1

3x(a-4)=2x(a+6)
3a-12=2a+12
a=24
copii=24
24-6=18
18:2=9 banci

Answer 2

$3*(x-4)=2*(x+6)$
$3x-12=2x+12$
$3x-2a=12+12$
$\boxed{x=24 ~elevi}$
$24-6=18$
$18:2=\boxed{9 ~banci}$