To help you find the value of $x$, I need to extract and analyze the information from the image you provided. Let me take a closer look at it first.The image you provided contains a geometry problem involving a line segment. The problem shows a line segment $AB$ with $A$ at one end and $B$ at the other end. The entire length of $AB$ is labeled as 20 units. The segment is divided into two parts: $AC$ and $CB$, with $AC = 2x$ and $CB = x + 4$.

To find $x$, we can use the equation:

$AC + CB = AB$

Substituting the values, we get:

$2x + (x + 4) = 20$

Now, let's solve for $x$:

$2x + x + 4 = 20$

$3x + 4 = 20$

Subtract 4 from both sides:

$3x = 16$

Finally, divide by 3:

$x = \frac{16}{3} \approx 5.33$

So, the value of $x$ is approximately $5.33$ units.

Would you like further details, or do you have any other questions?

Here are some related questions you might consider:

1. How would the value of $x$ change if $CB$ was $x + 5$ instead of $x + 4$?
2. What would be the length of $AC$ and $CB$ after finding $x$?
3. How can we verify the solution by substituting $x$ back into the original lengths?
4. How does this problem change if the total length $AB$ is doubled?
5. What type of mathematical concepts are being applied in this problem (e.g., linear equations)?

Tip: When solving equations involving variables on both sides, always simplify and combine like terms first to make solving easier.