Ответ:

  1. x = 9 − 4,83 = 4,17.
  2. x = 43,78 − 5,384 = 38,396.
  3. x = 15,148 + 14,862 = 30,010.
  4. x = 10 − 2,395 = 7,605.

Ответ: 1) x = 4,17; 2) x = 38,396; 3) x = 30,01; 4) x = 7,605.