To solve the equation \(-|11x - 9| + 9 = 7\), we start by isolating the absolute value expression.
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Subtract 9 from both sides: \[ -|11x - 9| = 7 - 9 \] \[ -|11x - 9| = -2 \]
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Multiply both sides by -1: \[ |11x - 9| = 2 \]
Now we can split this into two cases based on the definition of absolute value:
Case 1: \[ 11x - 9 = 2 \] Add 9 to both sides: \[ 11x = 11 \] Divide by 11: \[ x = 1 \]
Case 2: \[ 11x - 9 = -2 \] Add 9 to both sides: \[ 11x = 7 \] Divide by 11: \[ x = \frac{7}{11} \]
Now we have the two solutions:
- \(x = 1\)
- \(x = \frac{7}{11}\)
To identify the lower and higher-valued solutions:
- The lower-valued solution is \(\frac{7}{11}\)
- The higher-valued solution is \(1\)
So, the final answers are:
Lower-valued solution: \(\frac{7}{11}\)
Higher-valued solution: \(1\)