To solve the inequality \( 42 - 3x < -15 \), follow these steps:
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Subtract 42 from both sides: \[ -3x < -15 - 42 \] \[ -3x < -57 \]
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Divide both sides by -3. Remember that when you divide or multiply by a negative number, you must reverse the inequality sign: \[ x > 19 \]
Therefore, the solution to the inequality is \( x > 19 \).
The correct response is: x > 19.