Question

(+9)+(+5)
(-9)+(12)
(-3)+(12)
0+(+40)
​

Answer 1

Resposta:

+9+5=+14

-9+12=-21

-3+12=-15

0+40=+40

Answer 2

Resposta:

$( + 9) + ( + 5)$

$9 + 5 = 14$

$( - 9) + ( 12)$

$- 9 + 12 = 3$

$( - 3) + (12)$

$- 3 + 12 = 9$

$0 + ( + 40)$

$0 + 40 = 40$