Question

Решите уравнение
X-1/7=4/21
Расписать!!

Answer 1

Ответ:

$x - \frac{1}{7} = \frac{4}{21} \\x = \frac{4}{21} + \frac{1}{7} \\x = \frac{4}{21} + \frac{3}{21}\\x = \frac{7}{21} \\x = \frac{1}{3}$

Answer 2

Ответ:

$x-\frac{1}{7}=\frac{4}{21} \\x=\frac{4}{21} +\frac{1}{7} =\frac{4}{21}+\frac{3}{21} =\frac{4+3}{21} =\frac{7}{21} =\frac{1}{3}\\x=\frac{1}{3}$