Решение:
- а) \(\frac{2}{7}x \ge -14\)
\(x \ge -14 \cdot \frac{7}{2}\)
\(x \ge -49\) - б) \(3x - 8 < 4(2x - 3)\)
\(3x - 8 < 8x - 12\)
\(-8 + 12 < 8x - 3x\)
\(4 < 5x\)
\(x > \frac{4}{5}\) - в) \(3 - \frac{x - 1}{2} > 3x\)
\(6 - (x - 1) > 6x\)
\(6 - x + 1 > 6x\)
\(7 > 7x\)
\(x < 1\) - г) \(0,5(x - 2) + 1,5x < x + 1\)
\(0,5x - 1 + 1,5x < x + 1\)
\(2x - 1 < x + 1\)
\(2x - x < 1 + 1\)
\(x < 2\)
Ответ: а) \(x \ge -49\); б) \(x > \frac{4}{5}\); в) \(x < 1\); г) \(x < 2\).