27) -46x - 12 = 1 28) -38 - 13x = 1 29) x/6 - 7 = 0

Решение:

• 27. \(-46x - 12 = 1\)
  \(-46x = 1 + 12\)
  \(-46x = 13\)
  \[ x = \frac{13}{-46} = -\frac{13}{46} \]
• 28. \(-38 - 13x = 1\)
  \(-13x = 1 + 38\)
  \(-13x = 39\)
  \[ x = \frac{39}{-13} = -3 \]
• 29. \(\frac{x}{6} - 7 = 0\)
  \[ \frac{x}{6} = 7 \]
  \[ x = 7 \times 6 = 42 \]

Ответ: 27) \(x = -\frac{13}{46}\); 28) \(x = -3\); 29) \(x = 42\)