Question

1/6√10x=1/3√20 (equação irracional)

Answer 1

$\frac{1}{6} \sqrt{10x}=\frac{1}{3} \sqrt{20}\\ \\ \sqrt{10x}=\frac{\frac{1}{3}\sqrt{20}}{\frac{1}{6}}\\ \\ \sqrt{10x}=2\sqrt{20}\\ \\ (\sqrt{10x})^2=(2\sqrt{20})^2\\ \\ 10x=80\\ \\ \boxed{x=8}$