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Răspuns :

[tex] \frac{8}{3x+2}= \frac{12}{9} [/tex]
72=12(3x+2) => 72=36x+24 => 72-24=36x => 36x=48 => [tex] x=\frac{48}{36} [/tex] => [tex]x= \frac{4}{3} [/tex]