To solve the equation \( 153x - 9 - 4 = 12 \), we first simplify the left side:
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Combine \(-9\) and \(-4\): \[ 153x - 9 - 4 = 153x - 13 \] So the equation simplifies to: \[ 153x - 13 = 12 \]
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Add 13 to both sides: \[ 153x = 12 + 13 \] \[ 153x = 25 \]
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Divide both sides by 153: \[ x = \frac{25}{153} \]
Therefore, the value that completes the set of equations is \( x \neq \frac{25}{153} \).
Thus, the final answer is \( x \neq \frac{25}{153} \).