To solve the equation \( 82.78 ( p + 11.892 ) = 72.8464 \) for \( p \), we can follow these steps:
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Divide both sides by 82.78: \[ p + 11.892 = \frac{72.8464}{82.78} \]
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Calculate the right-hand side: \[ \frac{72.8464}{82.78} \approx 0.8806340981 \text{ (exact value without rounding)} \]
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Subtract 11.892 from both sides: \[ p = 0.8806340981 - 11.892 \]
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Calculate \( p \): \[ p = 0.8806340981 - 11.892 = -11.0113659019 \]
Thus, the solution for \( p \) is: \[ p = -11.0113659019 \]