First, let's simplify the equation \( 3 - 15x + 24 + 16x = 4x - 24 - 4x \).
Combining like terms on the left side:
- The constant terms: \( 3 + 24 = 27 \)
- The x terms: \( -15x + 16x = 1x \) or just \( x \)
So, the left side simplifies to: \[ 27 + x \]
On the right side, combine like terms:
- \( 4x - 4x = 0 \)
- The constant is \( -24 \), so the right side simplifies to: \[ -24 \]
Now, the equation looks like this: \[ 27 + x = -24 \]
To isolate \( x \), the next best step would be to subtract 27 from both sides of the equation.
Therefore, the correct response is: Subtract 27 from both sides of the equation.