\frac{1}{(\sqrt{6}+\sqrt{7})(\sqrt{6}-\sqrt{7})}, \\ x>\frac{1}{(\sqrt{6})^2-(\sqrt{7})^2}, \\ x>\frac{1}{6-7}, \\ x>-1." alt="(\sqrt{6}-\sqrt{7})x<\frac{1}{\sqrt{6}+\sqrt{7}}, \\ 6<7, \sqrt{6}<\sqrt{7}, \sqrt{6}-\sqrt{7}<0, \\ x>\frac{1}{(\sqrt{6}+\sqrt{7})(\sqrt{6}-\sqrt{7})}, \\ x>\frac{1}{(\sqrt{6})^2-(\sqrt{7})^2}, \\ x>\frac{1}{6-7}, \\ x>-1." align="absmiddle" class="latex-formula">