[tex]\displaystyle \left(\frac{3}{4} \times \frac{17}{6}- \frac{5}{2} : \frac{4}{3} \right) \times 8 = \\ \\
=\left(\frac{3 \times 17}{4 \times 6}- \frac{5}{2} \times \frac{3}{4} \right) \times 8 = \\ \\
=\left(\frac{1 \times 17}{4 \times 2}- \frac{5 \times 3}{2 \times 4}\right) \times 8 = \\ \\
=\left(\frac{17}{8}- \frac{15}{8}\right) \times 8 = \\ \\
=\frac{17-15}{8} \times 8 =\frac{2}{8} \times 8 =\frac{2 \times 8}{8}=\boxed{2}[/tex]
