Answer :
In order to solve the equation a + 8/3 = 2/3 for a, we just need to subtract 8/3 from both sides of the equation:
[tex]\begin{gathered} a+\frac{8}{3}=\frac{2}{3} \\ a=\frac{2}{3}-\frac{8}{3} \\ a=-\frac{6}{3} \\ a=-2 \end{gathered}[/tex]So the value of a is -2, therefore the correct option is the second one.