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daca elevii unei clase ar fi asezati cate 2 in banca ar ramane 3 banci libere iar daca ar fi asezati cate 3 elevi in banca ar ramane 8 banci libere
va roog chiar dau coroana


Răspuns :

x=nr banci
2(x-3)=3(x-8)
2x-6=3x-24
x-24-6=18 banci
2(18-3)=2*15=30 elevi