[tex]9 \frac{1}{2} - \frac{11}{8} \cdot \frac{6}{1} = 9 \frac{1}{2} - \frac{66}{8} = 9\frac{1}{2} - 8\frac{1}{4} = \frac{38}{4} - \frac{33}{4} = \frac{5}{4} = \boxed{1 \frac{1}{4}}[/tex]
