To solve the equation \( 82.78(p + 11.892) = 72.8464 \) for \( p \), follow these steps:
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Start with the equation: \[ 82.78(p + 11.892) = 72.8464 \]
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Divide both sides by \( 82.78 \) to isolate \( p + 11.892 \): \[ p + 11.892 = \frac{72.8464}{82.78} \]
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Calculate the right side: \[ p + 11.892 = 0.880 \]
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Now, subtract \( 11.892 \) from both sides to solve for \( p \): \[ p = 0.880 - 11.892 \]
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Perform the subtraction: \[ p = -11.012 \]
Thus, the solution for \( p \) is: \[ \boxed{-11.012} \]