\[6\sqrt{\frac{2}{3}}\ \ и\ \ 4\sqrt{\frac{3}{2}}\]
\[6\sqrt{\frac{2}{3}} = \sqrt{\frac{36 \cdot 2}{3}} = \sqrt{24};\ \ \]
\[4\sqrt{\frac{3}{2}} = \sqrt{\frac{16 \cdot 3}{2}} = \sqrt{24};\]
\[\sqrt{24} = \sqrt{24}\]
\[6\sqrt{\frac{2}{3}} = 4\sqrt{\frac{3}{2}}.\]