||2x – 4| – 5| = 9
|2x – 4| – 5 = 9
|2x – 4| = 14
2x – 4 = 14
2x = 18
x = 9 - корень
2x – 4 = -14
2x = -10
x = -5 - корень
|2x – 4| – 5 = -9
|2x – 4| = -4 - корней нет
9-5 = 4 - ответ
||2x – 4| – 5| = 9
|2x – 4| – 5 = 9
|2x – 4| = 14
2x – 4 = 14
2x = 18
x = 9 - корень
2x – 4 = -14
2x = -10
x = -5 - корень
|2x – 4| – 5 = -9
|2x – 4| = -4 - корней нет
9-5 = 4 - ответ