\( 2(3x-1) = 6x - 2 \)
\( -4(2x+3) = -8x - 12 \)
\( (6x - 2) + (-8x - 12) = 6x - 2 - 8x - 12 \)
\( (6x - 8x) + (-2 - 12) = -2x - 14 \)
Ответ: -2x - 14.