Question

|3-7х|=2
как решить...?​

Answer 1

$|3 - 7x| = 2 \\ 3 - 7x = 2 \\ 3 - 7x = - 2 \\ x = \frac{1}{7} \\ x = \frac{5}{7}$

Ответ

$x_{1} = \frac{1}{7} \\ x_{2} = \frac{5}{7}$