Question

Efetue as operações.
a) (+9) + (−6) =
b) (+13) − (+18) =
c) (−23) + (+11) =
d) (−22) − (+9) − (−10) =
e) (−8) + (−8) − (+12) + (+8) =
f) (−8) + (+10) + (−15) + (−20)

Answer 1

Resposta: a) -3

b) -5

c)  -12

d) -21

e) -20

f) -33

Espero ter ajudado!

Answer 2

Resposta:

Explicação passo a passo:

Efetue as operações.

a) (+9) + (−6) = 9-6

= 3

b) (+13) − (+18) = 13-18

= - 5

c) (−23) + (+11) = 11 - 23

= - 12

d) (−22) − (+9) − (−10)

= -22-9+10

= - 22 + 1

= - 21

e) (−8) + (−8) − (+12) + (+8)

= - 8 - 8 - 12 + 8

= - 16 - 4

= - 20

f) (−8) + (+10) + (−15) + (−20)

= - 8 + 10 - 15 - 20

= 2 - 35

= - 33