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

$4x + 2 = 12$

First, we solve for $x$:

1. Subtract 2 from both sides: $4x + 2 - 2 = 12 - 2$ $4x = 10$

2. Divide both sides by 4: $x = \frac{10}{4}$ $x = 2.5$

Next, we need to find the value of $16x + 8$:

$16x + 8 = 16(2.5) + 8$

Calculate $16 \times 2.5$:

$16 \times 2.5 = 40$

Then add 8:

$40 + 8 = 48$

So, the value of $16x + 8$ is:

$\boxed{48}$

Do you want more details or have any questions?

Here are some related questions for further practice:

1. Solve $3x + 5 = 20$. What is $9x + 3$?
2. If $7y - 4 = 17$, find the value of $14y - 8$.
3. Solve $5z + 3 = 28$. What is $10z + 6$?
4. If $2a + 7 = 15$, find the value of $4a + 14$.
5. Solve $6b - 5 = 13$. What is $12b - 10$?
6. If $9c + 2 = 29$, find the value of $18c + 4$.
7. Solve $8d - 3 = 21$. What is $16d - 6$?
8. If $10e + 1 = 51$, find the value of $20e + 2$.

Tip: Always double-check your calculations to ensure accuracy, especially when dealing with multiple steps.