To solve the equation, we need to isolate the variable on one side of the equation.

First, let's simplify both sides of the equation by combining like terms:

6 + 5x = 20 + 6x

Rearranging the terms:

5x - 6x = 20 - 6

Simplifying further:

-x = 14

To isolate x, we need to multiply both sides of the equation by -1:

(-1)(-x) = (-1)(14)

x = -14

Therefore, the solution to the equation is x = -14.