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12-03-2019
Mathematics

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Kamikazeminem Kamikazeminem

12-03-2019

[tex]3.5x + 15 \geqslant 55 \\ \Leftrightarrow 3.5x \geqslant 40 \\ \Leftrightarrow x \geqslant \frac{80}{7} \approx12[/tex]

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