Answer:
Option (a) is correct.
 x = 48.125
Explanation:
Given: 

We have to solve for x,
 
Consider the given expression 

First solving for brackets, we get,

Put , we get,
 

Simplify, we have,
 

Taking LCM(7,77) = 77
We have,
 

Simplify, we have,
 

Multiply both side by 77, we have,


Divide both side by 96, we have,

Thus, x = 48.125
Option (a) is correct.