Question

Модуль 7x+1=2......................................

Answer 1

$|7x + 1| = 2 \\ \\ 7x + 1 = 2 \\ 7x + 1 = - 2 \\ \\ 7x = 1 \\ 7x = - 3 \\ \\ x = \frac{1}{7} \\ x = - \frac{3}{7}$
Ответ: -3/7; 1/7.

Answer 2

|7x+1|=2

[7x+1=2
[7x+1=-2


1)7x+1=2
7x=1
x=1/7

2)7x+1=-2
7x=-3
x=-3/7

ответ -3/7;1/7