Verified Answer :

The answer is B. x = -14

Simplifying
-1x + 8 + 3x = x + -6
  Reorder the terms:
8 + -1x + 3x = x + -6
  Combine like terms: -1x + 3x = 2x
8 + 2x = x + -6

 Reorder the terms:
8 + 2x = -6 + x

 Solving
8 + 2x = -6 + x

 Solving for variable 'x'.

 Move all terms containing x to the left, all other terms to the right.

 Add '-1x' to each side of the equation.
8 + 2x + -1x = -6 + x + -1x

 Combine like terms: 2x + -1x = 1x
8 + 1x = -6 + x + -1x

 Combine like terms: x + -1x = 0
8 + 1x = -6 + 0
8 + 1x = -6
Divide each side by '1'.
x = -14
The answer is B) x=-14.