[tex]( - \frac{3}{4} - \frac{1}{8} \div \frac{3}{4}) \div ( + \frac{13}{8}) [/tex]
[tex]( - \frac{3}{4} - \frac{1}{8} \times \frac{4}{3}) \times \frac{8}{13} [/tex]
[tex]( - \frac{3}{4} - \frac{1}{2} \times \frac{1}{3} ) \times \frac{8}{13} [/tex]
[tex]( - \frac{3}{4} - \frac{1}{6}) \times \frac{8}{13} [/tex]
[tex] - \frac{11}{12} \times \frac{8}{13} [/tex]
[tex] - \frac{11}{3} \times \frac{2}{13} [/tex]
[tex] - \frac{22}{39} [/tex]
