Ответ:
[tex]5x - 1 < \frac{a}{4} \\ 5x < \frac{a + 4}{4} \\ x < \frac{a + 4}{20} \\ \\ \frac{a + 4}{20} = 2 \\ a + 4 = 40 \\ a = 36[/tex]
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Ответ:
[tex]5x - 1 < \frac{a}{4} \\ 5x < \frac{a + 4}{4} \\ x < \frac{a + 4}{20} \\ \\ \frac{a + 4}{20} = 2 \\ a + 4 = 40 \\ a = 36[/tex]