Ответ:

  1. [0m\(42-57:19\cdot14=42-3\cdot14=42-42=0\).

  2. \(6\cdot(69:23+7)=6\cdot(3+7)=6\cdot10=60\).

  3. \(96:(4\cdot18-56)=96:(72-56)=96:16=6\).

  4. \(68:(96-62)\cdot9=68:34\cdot9=2\cdot9=18\).

  5. \(5\cdot(98-10\cdot8)=5\cdot(98-80)=5\cdot18=90\).

  6. \(14\cdot(19\cdot4-71)=14\cdot(76-71)=14\cdot5=70\).

Ответ: 0; 60; 6; 18; 90; 70.