Ответ:

  1. 56+(4×(14−9)) = 56+4×5 = 56+20 = 76.
  2. (80−32:4)×3 = (80−8)×3 = 72×3 = 216.
  3. 5×(64+45:9)−3×4 = 5×(64+5)−12 = 5×69−12 = 345−12 = 333.
  4. (31−30)×(63:7+64:8) = 1×(9+8) = 17.
  5. (60−56)×(100−42) = 4×58 = 232.
  6. (42−18)×(60−36)+99 = 24×24+99 = 576+99 = 675.