Question

(+10)+(-20)+(-15)+(-12)+(-30)+(-40)

Answer 1

10 - 20 - 15 -12 - 30 - 40
-10 - 15 -12 -30 - 40
-25 - 12 - 30 - 40
- 37 - 30 - 40
-67 -40
-107

Resposta -107

Answer 2

             (+10)+(-20)+(-15)+(-12)+(-30)+(-40) =
                 10  - 20  -  15  -  12  -  30  -  40 =
                 10 - (20+15+12+30+40) =
                 10 -117 =
                     - 107