If \(b > 1\), \(x > 0\) and \((2x)^{\log_b 2} - (3x)^{\log_b 3} = 0\), find the value of \(x\). The original answer is in \(\frac{k}{m}\) format, please give the value of \(k + m\).

Let's think step by step and output the final answer within \boxed{}.
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