To solve the equation \( 153x - 9 - 4 = 12 \), we first simplify the equation:
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Combine like terms on the left side:
\[ 153x - 13 = 12 \]
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Now, add 13 to both sides of the equation:
\[ 153x = 12 + 13 \] \[ 153x = 25 \]
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Finally, divide both sides by 153 to solve for \( x \):
\[ x = \frac{25}{153} \]
Now, we must state the value of \( x \neq \) something to complete the statement. Since any value can be used except the value we found, we can write:
\[ x \neq \frac{25}{153} \]
Therefore, the final answer is:
\[ \boxed{\frac{25}{153}} \]