C
Step-by-step explanation:
On the left, we have 3 positive x bars and 8 1s.
Hence, the left can be represented by the following expression:
![3x+8](/tpl/images/0898/6744/1abb7.png)
On the right, we have 4 positive x bars and 6 1s.
Hence, the right can be represented by the following expression:
![4x+6](/tpl/images/0898/6744/a4acf.png)
The two are equivalent. Therefore:
![3x+8=4x+6](/tpl/images/0898/6744/fe995.png)
Solve for x. Subtract 6 from both sides:
![3x+2=4x](/tpl/images/0898/6744/1f671.png)
Subtract 3x from both sides:
![2=x](/tpl/images/0898/6744/a4301.png)
Flip:
![x=2](/tpl/images/0898/6744/2ff0d.png)
Hence, our answer is C.