Question

3,5/7-1,11/21-2,5/14​

Answer 1

Ответ:

7/2/7-111/100/21-5/2/14

1/2-37/700-5/28

Ответ:47/175

Пошаговое объяснение:

1.преоброзовать выражение

2.упростить выражение

3.вычислить

Answer 2

To solve the expression, let's perform the arithmetic operations step by step:

1. Convert fractions to a common denominator: The common denominator for 7, 21, and 14 is 21.

2. Simplify the fractions:

• $\frac{3}{7} = \frac{3 \times 3}{7 \times 3} = \frac{9}{21}$
• $\frac{11}{21}$ is already in the required form.
• $\frac{2}{5} = \frac{2 \times 4}{5 \times 4} = \frac{8}{20} = \frac{4}{10} = \frac{2}{5}$

3. Subtract the fractions:

$\frac{9}{21} - \frac{11}{21} - \frac{2}{5}$

4. Perform the subtraction:

$\frac{9 - 11}{21} - \frac{2}{5} = \frac{-2}{21} - \frac{2}{5}$

5. Find a common denominator for the fractions:

The common denominator for 21 and 5 is $21 \times 5 = 105$.

6. Convert fractions to the common denominator:

$\frac{-2}{21} = \frac{-2 \times 5}{21 \times 5} = \frac{-10}{105}$

$\frac{2}{5}$ is already in the required form.

7. Subtract the fractions:

$\frac{-10}{105} - \frac{2}{5}$

8. Perform the subtraction:

$\frac{-10 - 42}{105} = \frac{-52}{105}$

So, the final result is $\frac{-52}{105}$.