Verified Answer :

The answer is 5/26.

Hagrid

The given equation is:
\(\frac{3}{4}x + \frac{5}{8} = 4x\)
We are then asked to find x. 
First step: 
subtract (3/4)x on both sides. 
\(\frac{5}{8} = 4x -\frac{3}{4}x\)
\(\frac{5}{8} = 3.25x\)

Then divide 3.25 to both sides of the equation: 
\(\frac{5/8}{3.25} = x\)

x = 5/26