To subtract \( 4x \) from both sides of the equation \( 6x - 6 = 4x - 2 \), follow these steps:
Starting with the original equation: \[ 6x - 6 = 4x - 2 \]
Subtract \( 4x \) from both sides: \[ 6x - 4x - 6 = 4x - 4x - 2 \]
This simplifies to: \[ 2x - 6 = -2 \]
So, the final equation after subtracting \( 4x \) is: \[ 2x - 6 = -2 \]