9. |10x - 6| = 18

Решение:

Раскроем модуль:

1. \( 10x - 6 = 18 \)

\( 10x = 24 \)

\( x = \frac{24}{10} = \frac{12}{5} \)

2. \( 10x - 6 = -18 \)

\( 10x = -12 \)

\( x = -\frac{12}{10} = -\frac{6}{5} \)

Ответ: \( x = \frac{12}{5}, x = -\frac{6}{5} \).