Question

De o resultado das seguintes adições

A(+27)+(+13)+(-12)

B(-50)+(-30)+(-12)

C(+90)+(-75)+(-47)

D (-11)+(+20)+(+35)+(-27)

Answer 1

Resposta:

a) (+27)+(+13)+(-12)

+27 + (+13)+(-12)

+27+13+(-12)

+27+13-12

= 28

b) (-50)+(-30)+(-12)

-50+(-30)+(-12)

-50-30+(-12)

-50-30-12

- 92

c) (+90)+(-75)+(-47)

+90+(-75)+(-47)

+90-75+(-47)

+90-75-47

- 32

d) (-11)+(+20)+(+35)+(-27)

-11+(+20)+(+35)+(-27)

-11+20+(+35)+(-27)

-11+20+35+(-27)

-11+20+35-27

= 39