Ta có: \(15\sqrt{\dfrac{2x-1}{9}}+\dfrac{1}{2}\sqrt{8x-4}+\sqrt{50x-25}=3\)
\(\Leftrightarrow5\sqrt{2x-1}+\sqrt{2x-1}+5\sqrt{2x-1}=3\)
\(\Leftrightarrow11\sqrt{2x-1}=3\)
\(\Leftrightarrow2x-1=\dfrac{9}{121}\)
\(\Leftrightarrow2x=\dfrac{130}{121}\)
hay \(x=\dfrac{65}{121}\)