The expression simplifies as follows:

2x - 6, 1 - 4(1x - 4x) - 8x - 4, 14x

= 2x - 6, 1 - 4x + 16x - 8x - 4, 14x

= 2x - 6, 1 + 4x - 8x - 4, 14x

= 2x - 6, -3x - 3, 14x

Therefore, the simplified expression is 2x - 6, -3x - 3, 14x.