https://file.aiquickdraw.com/mathbot/file/17303365124797qwhvijj.jpg

To solve this problem, we start with the given equation:

1. **Solve for \( x \):**
   \[
   x - 3 = 5
   \]
   Adding 3 to both sides gives:
   \[
   x = 8
   \]

2. **Substitute \( x = 8 \) into \( 2(x + 4) \):**
   Substitute \( x = 8 \):
   \[
   2(x + 4) = 2(8 + 4)
   \]
   Simplify inside the parentheses:
   \[
   2(12) = 24
   \]

So, the answer is **24**.

Let me know if you need further details or have any questions!

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### Related Questions
1. How would the answer change if \( x - 3 = 7 \) instead?
2. What is the general process for solving expressions like \( a(x + b) \)?
3. How can you verify your answer to ensure it is correct?
4. How does changing the coefficient outside the parentheses affect the answer?
5. What are common mistakes to avoid when solving for \( x \) and substituting?

### Tip
Always simplify the expression inside the parentheses before applying any multipliers outside to avoid mistakes.

If x - 3 = 5, what is the value of 2(x + 4)?

Learn how to solve the equation x - 3 = 5 and find the value of 2(x + 4) through a step-by-step solution. This problem covers basic algebraic concepts and substitution, ideal for students in Grades 7-8.

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