Question

| 3х -5|=7 плииииииз

Answer 1

(3*х-5)=7
7+5=12
х=12:3
х=4
-------------
(3*4-5)=7
7=7

Answer 2

$|3x -5|=7$

$\left[\begin{array}{c}3x -5=7\\3x -5=-7\\\end{array}\right \Rightarrow \left[\begin{array}{c}3x=12\\3x=-2\\\end{array}\right \Rightarrow \left[\begin{array}{c}x_1=4\\x_2=- \frac{2}{3} \\\end{array}\right$

Ответ:  $x_1 = 4 \ ; \ x_2 = - \frac{2}{3}$