To find the value of x in the equation, we can compare the exponents on both sides.
On the left side, we have (a/b)^(2/3).
On the right side, we have (a/b)^x.
To make the exponents on both sides match, we can equate them:
2/3 = x.
Therefore, the value of x is 2/3.
None of the provided options match the value of x as 2/3. If those are the only options given, then none of them are correct for the equation.