Question

socorroooooooooooooo​

Answer 1

Resposta:

a) -17

b) 0

c) 6

Explicação passo-a-passo:

a)-12+8-9+2-6

-4-7-6

-11-6

-17

b)+15-8+4-4+8-15

7+8-15

15-15

0

c)+15-5-3+1-2

10-2-2

8-2

6

Answer 2

(+) (+) = +

(–) (+) = –

(+) (–) = –

(–) (–) = +

$a)$   $-12+8-9+2-6=$

     $-4-7-6=$

     $-17$

$b)$   $+15-8+4-4+8-15=$

     $+7+4+4-15=$

     $+11-11=$ $0$

$c)$   $+15-5-3+1-2=$

     $+10-2-2=$

      $+8-2=$

       $+6$