Let's solve the equation step by step:
Given: \[ 2x + 39 + 5 = 12 \]
First, combine the constants on the left side: \[ 2x + 44 = 12 \]
Next, subtract 44 from both sides: \[ 2x = 12 - 44 \] \[ 2x = -32 \]
Now, divide both sides by 2: \[ x = \frac{-32}{2} \] \[ x = -16 \]
The solution is \( x = -16 \).
Since none of the provided options (5, 2, 44, or 125) are correct, the answer is: \[ x = -16 \]