| 1. \(x \in [{1}\,;{7}]\) |
\( \iff \) |
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2. \(x \in\,]-\infty,{-18}]\,\cup\,[{17}\,;+\infty[\)
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\( \iff \) |
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3. \(x \in [{-12}\,;{-5}]\)
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\( \iff \) |
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| 4. \(x \in {\{16}\,;{-14}\}\) |
\( \iff \) |
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| 5. \(x \in [{29}\,;+\infty[\) |
\( \iff \) |
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| 6. \(x \in\,]-\infty\,;{28}]\) |
\( \iff \) |
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| 7. \(x \in \{{5}\,;{-19}\}\) | \( \iff \) | |
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