Пожаааалуйста помогите сроооочно

1) $12 \frac{5}{12} + 4 \frac{1}{8} - 4 \frac{2}{3} =$

$\frac{149}{12} + \frac{33}{8} - \frac{14}{3} =$

$\frac{298}{24} + \frac{99}{24} - \frac{112}{24} =$

$\frac{285}{24} = 11.875$

2) $1 \frac {7}{8} \times 3,2 \times 2 \frac {1}{3} = \frac {15}{8} \times 3 \frac {2}{10} \times \frac {7}{3}= \frac {15}{8} \times \frac {16}{5} \times \frac {7}{3} = \frac {1680}{120}= 14$