Ответ:

\( 4x - 3 = 2(x + 0.3) \)

\( 4x - 3 = 2x + 0.6 \)

\( 4x - 2x = 0.6 + 3 \)

\( 2x = 3.6 \)

\( x = \frac{3.6}{2} \)

\( x = 1.8 \)

Ответ: 1,8