To solve the equation:

0.3x - 4 - 0.1x/3 = 0.3x + 1/2

First, let's simplify the equation:

0.3x - 4 - 0.1x/3 = 0.3x + 1/2
0.3x - 4 - 0.0333x = 0.3x + 0.5
0.267x - 4 = 0.3x + 0.5

Next, let's combine like terms:

0.267x - 4 = 0.3x + 0.5
0.267x - 0.3x = 4 + 0.5
-0.033x = 4.5

Now, let's solve for x:

x = 4.5 / -0.033
x = -136.36

Therefore, the solution to the equation is x = -136.36.