Question

Прошу,срочно,помогите ​

Answer 1

Ответ:

$1) \frac{4}{5} \times 2.8 = \frac{4}{5} \times \frac{14}{5} = \frac{56}{25}$

$2) \frac{3}{8} \times 1.4 = \frac{3}{8} \times \frac{7}{5} = \frac{21}{40}$

$3)55.5 \times \frac{7}{8} \times 0.4 = \frac{111}{2} \times \frac{7}{8} \times \frac{2}{5} = 111 \times \frac{7}{8} \times \frac{1}{5} = \frac{777}{40}$

$4)4.75 \times \frac{3}{40} \times 3.2 \times 1.5 = \frac{19}{4} \times \frac{3}{40} \times \frac{16}{5} \times \frac{3}{2} = \frac{171}{100}$