Ответ:

Решение:

  1. \( 3.8 + (-7.3) = 3.8 - 7.3 = -3.5 \)
  2. \( -6.4 + 10.2 = 3.8 \)
  3. \( -4.6 + (-5.9) = -4.6 - 5.9 = -10.5 \)
  4. \( -7.6 + 7.6 = 0 \)
  5. \( 2.8 - 5.3 = -2.5 \)
  6. \( -19.6 - 4.6 = -24.2 \)
  7. \( -6.6 - (-12.3) = -6.6 + 12.3 = 5.7 \)

Ответ: -3.5; 3.8; -10.5; 0; -2.5; -24.2; 5.7.