Question

-30+8+(-15)+(-1)-7-2=

Answer 1

-30+ 8- 15 - 1 -7 - 2=  obs: sinais iguais soma e conserva o sinal
-45 -1 -7-2 + 8
-46 - 7 - 2+ 8
-53 -2 + 8
-55 + 8 
-47