Answer
$\approx -0.484$
Work Step by Step
$e^{2-x}=12\Rightarrow \dfrac {e^{2}}{ex}=12\Rightarrow e^{x}=\dfrac {e^{2}}{12}\Rightarrow x=\ln \left( \dfrac {e^{2}}{12}\right) \approx -0.484$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.