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 to isolate the term with \( p \): \[ p + 11.892 = \frac{72.8464}{82.78} \] Calculating the right side: \[ p + 11.892 = 0.8797 \quad (approximately) \]
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Subtract 11.892 from both sides: \[ p = 0.8797 - 11.892 \] So, \[ p = -11.0123 \quad (approximately) \]
Thus, the exact value for \( p \) without rounding is:
\[ p = \frac{72.8464}{82.78} - 11.892 \]
Calculating it more precisely:
First, compute \( \frac{72.8464}{82.78} \): \[ \frac{72.8464}{82.78} = 0.879699 \]
Then: \[ p = 0.879699 - 11.892 \] \[ p = -11.012301 \quad (exact) \]
So the solution for \( p \) is: \[ p = -11.012301 \]