To simplify the expression \((5−6)−23\):
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Calculate \(5 - 6\): \[ 5 - 6 = -1 \]
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Then, subtract \(23\) from \(-1\): \[ -1 - 23 = -24 \]
So, the expression simplifies to \(-24\).
Now let's look at the responses provided to find an equivalent expression:
- \(154\)
- \( \frac{1}{5^4} \)
- \(5^4\)
- \(5^{-4}\)
- \(5^{-203}\)
None of these responses equate to \(-24\). Therefore, there’s no equivalent expression among the choices provided. Please double-check the multiple choice options or re-evaluate for more context, as none of these match \(-24\).