[tex] | - \frac{7}{12} | - |1 \frac{3}{4} | = \frac{7}{12} - 1 \frac{3}{4} = \frac{7}{12} - \frac{7}{4} = \frac{7 - 21}{12} = \frac{ - 14}{12} = - \frac{7}{6} = - 1 \frac{1}{6} [/tex]

[tex] - 2 \frac{2}{5} \times 8 \frac{1}{3} = - \frac{12}{5} \times \frac{25}{3} = - 4 \times 5 = - 20[/tex]