Question

Remova os parênteses e calcule.
a. -(8)+(-3)+(4)
b.+(+21)-(-5)
c.+(-20)+(+7)
d.+(+20)-(+7)​

Answer 1

Resposta:

a) -7

b) 26

c) -13

d) 13

^-^

Answer 2

→ Cálculo :

A) - ( 8 ) + ( - 3 ) + ( 4 )

-8 - 3 + 4

-11 + 4

-7

B) + ( + 21 ) - ( - 5 )

+21 + 5

+26

C) + ( - 20 ) + ( + 7 )

-20 + 7

-13

D) + ( + 20 ) - ( + 7 )​

+20 - 7

+13