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04-10-2018
Mathematics

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solve inequality -12 < 3x- 15 < 9
[tex] - 12 \leqslant 3x - 15 \leqslant 9[/tex]

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11-10-2018

[tex]-12\leq3x-15\leq9\qquad|+15\\\\3\leq3x\leq24\qquad|:3\\\\1\leq x\leq8[/tex]

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