Hi All how do you rationalise and symplify 2 root 3 over root 7

Hi All how do you rationalise and symplify 2 root 3 over root 7

\(\dfrac {2\sqrt{3}}{\sqrt{7}} = \dfrac {2\sqrt{3}}{\sqrt{7}} \dfrac{\sqrt{7}}{\sqrt{7}} = \dfrac {2\sqrt{21}}{7}\) 

Thanks Rom