Question

(3 5/21+x)-1 8/21=4 пожалуйста ​

Answer 1

Ответ:

$\displaystyle x=2\frac{1}{7}$

Решение:

$\displaystyle(3\frac{5}{21} +x)-1\frac{8}{21} =4$

$\displaystyle3\frac{5}{21} +x =4+1\frac{8}{21}$          

$\displaystyle3\frac{5}{21} +x=5\frac{8}{21}$

$\displaystyle x=5\frac{8}{21} -3\frac{5}{21}$

$\displaystyle x=2\frac{3}{21}$

$\displaystyle x=2\frac{1}{7}$

Answer 2

Ответ:

2. 1/7

Пошаговое объяснение:

(3. 5/21 + х) - 1. 8/21 = 4

3. 5/21 + х = 4 + 1. 8/21

3. 5/21 + х = 5. 8/21

х = 5. 8/21 - 3. 5/21

х = 2. 3/21

х = 2. (3:3)/(21:3)

х = 2. 1/7