Here, we want to solve the given equation
What we have to do here is to square both sides of the equation
We have this as follows;
[tex]\begin{gathered} \frac{\sqrt[]{3x}}{\sqrt[]{x-6}\text{ }}\text{ = 3} \\ \text{Squaring both sides will remove the roots on the left and we have;} \\ \frac{3x}{x-6}\text{ = }3^2 \\ \\ 3x\text{ = 9(x-6)} \\ 3x\text{ = }9x-54 \\ 9x-3x\text{ = 54} \\ 6x\text{ = 54} \\ \text{ x= }\frac{54}{6} \\ x\text{ = 9} \end{gathered}[/tex]