Ответ:
6х – 2 (2х + 9) ≤ 1;
6х – 2 * 2х – 2 * 9 ≤ 1;
6х – 4х – 18 ≤ 1;
6х – 4х ≤ 1 + 18
6х – 4х ≤ 19;
2х ≤ 19
х ≤ 19 / 2;
х ≤ 9,5.
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Ответ:
6х – 2 (2х + 9) ≤ 1;
6х – 2 * 2х – 2 * 9 ≤ 1;
6х – 4х – 18 ≤ 1;
6х – 4х ≤ 1 + 18
6х – 4х ≤ 19;
2х ≤ 19
х ≤ 19 / 2;
х ≤ 9,5.