Verified answer

Ответ:

x = 12; -12

Пошаговое объяснение:

||x|-9|=3

||[tex]x_{1}[/tex]|| = 9+3

||[tex]x_{2}[/tex]|| = -9+(-3)

||[tex]x_{1}[/tex]|| = 12

||[tex]x_{2}[/tex]|| = -12

|[tex]x_{1}[/tex]| = 12

|[tex]x_{2}[/tex]| = -12

[tex]x_{1}[/tex] = 12

[tex]x_{2}[/tex] = -12