Question

Выполнить сокращение дробей.
А. 16*10*18/70*12*24
Б. 15*35*21/75*49*14
В. 8*7+5-7-2*7/121
Помогите... ​

Answer 1

Объяснение:

а)

$\frac{16 \times 10 \times 18}{70 \times 12 \times 24} = \frac{4 \times 3}{ 7 \times 3 \times 4} = \frac{1}{7}$

б)

$\frac{15 \times 35 \times 21}{75 \times 49 \times 14} = \frac{5 \times 3}{5 \times 7 \times 2} = \frac{3}{7 \times 2} = \frac{3}{14}$

в)

$\frac{8 \times 7 + 5 - 7 - 2 \times 7}{121} = \frac{56 + 5 - 7 - 14}{121} = \frac{40}{121}$

Answer 2

Ответ:

а)

$\frac{16 \times 10 \times 18}{70 \times 12 \times 24} = \frac{4 \times 3}{7 \times 3 \times 4} = \frac{1}{7}$

б)

$\frac{15 \times 35 \times 21}{75 \times 49 \times 14} = \frac{5 \times 3}{5 \times 7 \times 2} = \frac{3}{7 \times 2} = \frac{3}{14}$

в)

$\frac{8 \times 7 + 5 - 72 \times 7}{121} = \frac{56 + 5 - 7 - 14}{121} = \frac{40}{121}$