4) Составить 5 простых уравнений и найти их корни.

1. \(x + 18 = fifty\)
   \(x = 50 - 18\)
   \(x = 32\)
2. \(x - 27 = 45\)
   \(x = 45 + 27\)
   \(x = 72\)
3. \(x + 36 = 91\)
   \(x = 91 - 36\)
   \(x = 55\)
4. \(x - 14 = 68\)
   \(x = 68 + 14\)
   \(x = 82\)
5. \(x : 6 = 12\)
   \(x = 12 · 6\)
   \(x = 72\)

Ответ: корни уравнений — 32, 72, 55, 82, 72.