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determinati x stiind ca: ax+3bx+7x=380 si 2a+6b+14=152

Răspuns :

Se da factor comun x(a+3b+7)=380; in relatia 2a+6b+14=152 daca impartim prin 2 obtinem a+3b+7=76;  x*76=380; => x=380:76; x=5