a)
[tex] \frac{4}{3} \times ( \frac{3}{2} ) ^{2} - \frac{5}{6} [/tex]
[tex] \frac{4}{3} \times \frac{9}{4} - \frac{5}{6} [/tex]
[tex]3 - \frac{5}{6} [/tex]
[tex] \frac{13}{6} [/tex]
b)
[tex] \frac{8}{5} \times ( \frac{5}{4} ) ^{2} - \frac{5}{8} [/tex]
[tex] \frac{5}{8} \times \frac{25}{16} - \frac{5}{8} [/tex]
[tex] \frac{5}{2} - \frac{5}{8} [/tex]
[tex] \frac{15}{8} [/tex]
