Найди значение выражения: a) (750 + 4080 : 120) ⋅ 0 + 752 : 752 – 200 – (8142 – 8142) : 1; б) 2795 ⋅ (52 007 : 52 007) – (0 ⋅ 7880 + 2795) : 1 + 0 : 648 030.

1. Решим выражение a):
   1. (750 + 4080 : 120) ⋅ 0 + 752 : 752 – 200 – (8142 – 8142) : 1 =
   2. (750 + 34) ⋅ 0 + 1 – 200 – 0 : 1 =
   3. 784 ⋅ 0 + 1 – 200 – 0 =
   4. 0 + 1 – 200 – 0 =
   5. 1 – 200 = -199
2. Решим выражение б):
   1. 2795 ⋅ (52 007 : 52 007) – (0 ⋅ 7880 + 2795) : 1 + 0 : 648 030 =
   2. 2795 ⋅ 1 – (0 + 2795) : 1 + 0 =
   3. 2795 – 2795 : 1 + 0 =
   4. 2795 – 2795 + 0 = 0

Ответ: a) -199, б) 0