## Elementary Algebra

$\frac{6\sqrt 7}{7}$
The simplification of the expression is only possible through rationalizing the denominator: Step 1: $\frac{\sqrt {36}}{\sqrt 7}$ Step 2: $\frac{\sqrt {6^{2}}}{\sqrt 7}\times\frac{\sqrt 7}{\sqrt 7}$ Step 3: $\frac{6}{\sqrt 7}\times\frac{\sqrt 7}{\sqrt 7}$ Step 4: $\frac{6\sqrt 7}{(\sqrt 7)^{2}}$ Step 5: $\frac{6\sqrt 7}{7}$