Ответ:

  1. 3⁻¹ + (−2)⁻² = 1/3 + 1/4 = 4/12 + 3/12 = 7/12.
  2. (2/3)⁻³ − 4⁻² = (3/2)³ − 1/16 = 27/8 − 1/16 = 54/16 − 1/16 = 53/16.
  3. (0,2)⁻² + (0,5)⁻⁵ = 5² + 2⁵ = 25 + 32 = 57.
  4. (−0,1)⁻³ − (−0,2)⁻³ = (−10)³ − (−5)³ = −1000 − (−125) = −875.

Ответ: 1) 7/12; 2) 53/16; 3) 57; 4) −875.