С решением пожалуста

1.
$- 3.75 - 1 \frac{1}{6} = - 3 \frac{75}{100} - 1 \frac{1}{6}$
$- 3 \frac{75}{100} - 1 \frac{1}{6 } = - 3 \frac{3}{4} - 1 \frac{1}{6}$

$-3 \frac{3}{4} - 1 \frac{1}{6} = - 3 \frac{9}{12} - 1 \frac{2}{12} = - 4 \frac{11}{12}$
2.
$1 \frac{1}{5} \times ( - 4 \frac{11} { 12} ) = \frac{6}{5} \times ( - \frac{59}{12} )$

$\frac{6}{5} \times ( - \frac{59}{12} ) = - \frac{6 \times 59}{5 \times 12} = - \frac{59}{10}$
$- \frac{59}{10} = - 5 \frac{9}{10} = - 5.9$
Ответ : - 5.9