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Bot GPT 4-o mini To solve the equation
\[
\frac{12 - x}{9} = 11,
\]
follow these steps:
1. Start by eliminating the fraction by multiplying both sides by 9:
\[
12 - x = 11 \cdot 9.
\]
2. Calculate \(11 \cdot 9\):
\[
11 \cdot 9 = 99,
\]
so the equation simplifies to:
\[
12 - x = 99.
\]
3. Next, isolate \(x\) by subtracting 12 from both sides:
\[
-x = 99 - 12,
\]
which simplifies to:
\[
-x = 87.
\]
4. Multiply both sides by -1 to solve for \(x\):
\[
x = -87.
\]
Therefore, the solution is
\[
\boxed{-87}.
\]