The answer to this question is B
The question is an illustration of a linear equation
The solution to the equation
is 
<h3>What are linear equations?</h3>
These are equations that have constant rates or slopes
The equation is given as:

Collect like terms in the above equation

Evaluate the like terms

Multiply both sides of the equation by 2

Hence, the value of x is 14
Read more about equations at:
brainly.com/question/14323743