To solve the equation, we need to simplify and isolate the variable.

128 - 3(x + 4) = 23

First, distribute the -3 to the terms inside the parentheses:

128 - 3x - 12 = 23

Combine like terms:

116 - 3x = 23

Next, subtract 116 from both sides of the equation:

-3x = 23 - 116

Simplify:

-3x = -93

Finally, divide both sides of the equation by -3 to solve for x:

x = -93 / -3

Simplify:

x = 31