7 + ( 3 ) ( 8 ) / 4 - 5 =
- 18 / 6 + 4 - 10 / 5 + 3 =
2 ( -5 - 3 ) + ( -4 - 7 ) =
( - 4 ) ( - 3 ) + 8 / 2 - 7 + 9 =
2 + 3 - 5 - 17 + 14 - 5 =
- 27
8
2
18
- 8
