Ответ:

  1. 75 − x = 15; x = 75 − 15 = 60.

  2. x + 9 = 54; x = 54 − 9 = 45.

  3. x − 38 = 42; x = 42 + 38 = 80.

  4. 56 − x = 19; x = 56 − 19 = 37.

  5. 25 + x = 73; x = 73 − 25 = 48.

  6. x − 14 = 27; x = 27 + 14 = 41.

Ответ: 60; 45; 80; 37; 48; 41.