Question

помогите пожалуйста
||x|-9|=3​

Answer 1

$| |x| - 9 | = 3 \\ \\ | x| - 9 = 3 \\ |x| - 9 = - 3 \\ \\ x = 12 \\ x = - 12 \\ x = 6 \\ x = - 6$