Question

Calcula:
(-9)+(+7)+(+1)=
(-8)+(+8)-(-2)=
(+2)-(-9)-(-8)-(-8)=
(+4)+(-7)-(+2)+(+1)=
(+2)-(+8)+(-5)-(-3)-(+1)=
(-1)+(-1)+(-5)-(+7)+(-7)=

Ayudaaaaa
Respondan bien por favor. ...

Answer 1

-1

2

27

-4

-9

-21

...............