To solve the equation \( 10x + 13 = -12 \), you can follow these steps:
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Subtract 13 from both sides: \[ 10x + 13 - 13 = -12 - 13 \] This simplifies to: \[ 10x = -25 \]
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Divide both sides by 10: \[ x = \frac{-25}{10} \] Simplifying the fraction gives: \[ x = -2.5 \]
So the solution is \( x = -2.5 \).