Răspuns:
[tex]a=\frac{2}{3} [/tex]
Explicație pas cu pas:
[tex]2a=\frac{9a+2}{6} \\\\ 2a = \frac{9a}{6}+\frac{2}{6} \\\\ 6*2a = 9a + 2 \\\\ 12a-9a=2 \\\\ 3a=2 \\\\ a=\frac{2}{3} [/tex]
