Question

(12 307/728 - 4, 7 * 2 2/7) : (- 4,85) =

Answer 1

Ответ:

-0,43

Пошаговое объяснение:

Делим сначала 12307 на 728,получаем 16,9.

Далее умножаем 4,7 на 22 и делим на 7,получаем 14,77.

От 16,9 отнимаем 14,77,получаем 2,13.

2,13 делим на -4,85= -0,43

Answer 2

Ответ

(можно удалить этот ответ, тк я ответила неправильно)

Пошаговое объяснение:

Answer 3

Let's solve the expression step by step:

1. $12 \frac{307}{728} - 4$
   First, convert the mixed fraction to an improper fraction:
   $12 \frac{307}{728} = \frac{12 \cdot 728 + 307}{728} = \frac{9236 + 307}{728} = \frac{9543}{728}$

   So, the expression becomes:
   $\frac{9543}{728} - 4$

2. $7 \cdot 2 \frac{2}{7}$
   Convert the mixed fraction to an improper fraction:
   $7 \cdot 2 \frac{2}{7} = 14 + \frac{2}{7} = \frac{98 + 2}{7} = \frac{100}{7}$

   So, the expression becomes:
   $\frac{100}{7}$

3. $-4,85$
   This is already a decimal number.

Now we have:
$\frac{9543}{728} - 4$ and $\frac{100}{7}$ and $-4.85$

4. $(\frac{9543}{728} - 4) : \frac{100}{7}$
   Divide the first fraction by the second fraction:
   $(\frac{9543}{728} - 4) \div \frac{100}{7} = \frac{9543}{728} \cdot \frac{7}{100} - 4 \cdot \frac{7}{100} = \frac{9543 \cdot 7}{728 \cdot 100} - \frac{28}{100}$

   Calculate the numerator:
   $9543 \cdot 7 = 66701$

   Calculate the denominator:
   $728 \cdot 100 = 72800$

   So, the expression becomes:
   $\frac{66701}{72800} - \frac{28}{100}$

5. $\frac{66701}{72800} - \frac{28}{100}$
   Convert the second fraction to a fraction with a common denominator:
   $\frac{66701}{72800} - \frac{28}{100} = \frac{66701}{72800} - \frac{364}{72800}$

   Combine the fractions:
   $\frac{66701 - 364}{72800} = \frac{66337}{72800}$

Now we have:
$\frac{66337}{72800}$ and $-4.85$

6. $\frac{66337}{72800} : -4.85$
   Divide the fraction by $-4.85$:
   $\frac{66337}{72800} \div -4.85 = \frac{66337}{72800} \cdot \frac{1}{-4.85} = \frac{66337}{-352720}$

So, the final result is:
$\frac{66337}{-352720}$