To solve the equation \( 20 = 6x - 4 \) for \( x \), the first step is to isolate the term with \( x \). You can do this by adding 4 to both sides of the equation.
So, you would perform the following operation:
\[ 20 + 4 = 6x - 4 + 4 \]
This simplifies to:
\[ 24 = 6x \]
Now you can proceed to solve for \( x \).