\(ĐK:x\ne2\\ \dfrac{2m-1}{x-2}=m-3\\ \Leftrightarrow2m-1=\left(m-3\right)\left(x-2\right)\\ \Leftrightarrow mx-3x=4m-7\\ \Leftrightarrow\left(m-3\right)x=4m-7\)
Phương trình vô nghiệm\(\Rightarrow\left\{{}\begin{matrix}m-3=0\\4m-7\ne0\end{matrix}\right.\Rightarrow m=3\)