Let's denote the number $g$.

According to the problem, the sequence of operations can be expressed as follows:

1. $g$ is decreased by 23: $g - 23$
2. The result is then multiplied by 0.5: $0.5(g - 23)$
3. This result is equal to 8 more than twice the number $g$: $8 + 2g$

We can set up the equation:

$0.5(g - 23) = 8 + 2g$

Now, let's solve this equation step-by-step.

Step 1: Expand the left side of the equation

$0.5(g - 23) = 0.5g - 11.5$

Step 2: Set the expanded equation equal to the right side

$0.5g - 11.5 = 8 + 2g$

Step 3: Move all terms involving $g$ to one side of the equation and constants to the other side

$0.5g - 2g = 8 + 11.5$

Step 4: Simplify both sides

$-1.5g = 19.5$

Step 5: Solve for $g$ by dividing both sides by -1.5

$g = \frac{19.5}{-1.5}$ $g = -13$

So, the value of $g$ is $-13$.

Would you like more details or have any questions? Here are some additional related questions for practice:

1. If $g$ were increased by 10 and then divided by 2, what would the new expression be?
2. What is $0.5(g - 23)$ when $g = -10$?
3. Solve $3(g + 4) = 2g - 5$.
4. If the equation were $0.5(g - 23) = 10 + 2g$, what would $g$ be?
5. What is the value of $g$ if $g - 23 = 2g + 10$?
6. Find $g$ if $2(g - 10) = 3g + 5$.
7. What is the solution to $0.5(g + 10) = 2g - 7$?
8. If $g$ is decreased by 15 and then multiplied by 3, how would you write that expression?

Tip: When solving equations, always isolate the variable on one side by using inverse operations to simplify step-by-step.