Question

resolva
[+20]+[+7]
[-3]+[-8]
[-7] [-3]
[-10] [-10]
[-17] [-3]
[4] [-1]
[-9]+[+3]
4-2+8-1
[+10] [-8]
-5+10+5

Answer 1

Resolvendo as operações:

[+20] + [+7] = +27

[-3] + [-8] = -11

[-7] [-3] = +21

[-10] [-10] = -100

[-17] [-3] = +51

[4] [-1] = -4

[-9] + [+3] = -6

4 - 2 + 8 - 1 = +9

[+10] [-8] = -80

-5 + 10 + 5 = +10

Espero ajudar.