9([tex] \frac{1}{3} + \frac{2}{3}x)-5x=8 [/tex]=>[tex] \frac{9}{3} + \frac{18}{3}*x-5x=8\ \textless \ =\ \textgreater \ 3+6x-5x=8\ \textless \ =\ \textgreater \ 3+x=8 =\ \textgreater \ [/tex][tex]=\ \textgreater \ x= 5[/tex]
Deci, x=5.
Am ajuns imediat la 3 si 6x , deoarece am impartit 9 la 3 si 18x la 3.
