17 \\ 2) \: rassmotim \: 2 \: neravenstvo \\ \frac{x}{7} < 3 \frac{1}{7} \\ \frac{x}{7} < \frac{22}{7} \\ x < 22 \\otvet \\ 17 < х < 22 \\ х ∈ (17; 22) \\ х = 18, 19, 20, 21" alt="2 \frac{3}{7} < \frac{x}{7} < 3 \frac{1}{7} \\ 1) \: rassmotim \: 1 \: neravenstvo \\ 2 \frac{3}{7} < \frac{x}{7} \\ \frac{17}{7} < \frac{x}{7} \\ x > 17 \\ 2) \: rassmotim \: 2 \: neravenstvo \\ \frac{x}{7} < 3 \frac{1}{7} \\ \frac{x}{7} < \frac{22}{7} \\ x < 22 \\otvet \\ 17 < х < 22 \\ х ∈ (17; 22) \\ х = 18, 19, 20, 21" align="absmiddle" class="latex-formula">