( - 36 ) / ( 9) =
( 5 ) ( - 8 ) =
30 - ( - 28 ) =
- 15 + 55 =
- 45 + ( - 60 ) =
15 - 75 =
80 - 100 =
( - 120 ) / ( - 6 ) =
( - 15 ) ( - 4 ) =
- 67 - 15 =
58
- 40
- 105
20
- 20
- 82
-60
60
40
- 4