Răspuns:
[tex]\frac{2}{11} +\frac{5}{11} +\frac{x}{11} =\frac{9}{11}[/tex]⇔[tex]\frac{2+5+x}{11} =\frac{9}{11}[/tex]⇔[tex]2+5+x=9[/tex]⇒[tex]x=2[/tex]
==lucianglont666==
Mult succes!
