1. Решите уравнение: 1) x + 54 = 112; 2) 256 − x = 98; 3) x − 214 = 553; 4) 168 + x = 773.

1. \(x + 54 = 112\)
   \(x = 112 - 54 = 58\)
2. \(256 - x = 98\)
   \(x = 256 - 98 = 158\)
3. \(x - 214 = 553\)
   \(x = 553 + 214 = 767\)
4. \(168 + x = 773\)
   \(x = 773 - 168 = 605\)

Ответ: 1) 58; 2) 158; 3) 767; 4) 605.