Question

3- Calcule:
a)( + 12 ) + ( + 21 )=
b) ( + 13 ) + ( + 7) =
c)( +23 ) + ( +21) =
d) (- 12) + (-11 ) =
e) (-23 ) + (-4)=
f)( + 40 ) + (- 17 ) =​

Answer 1

Resposta:

Explicação passo-a-passo:

a) 12 + 21 = 33

b) 13 + 7 = 20

c) 23 + 21 = 44

d) -12 -11 = -23

e) -23 -4 = -27

f) 40 - 17 = 23

Answer 2

Resposta:

a) 12+21=33

b) 13+7=20

c) 23+21=44

d) -12-11= -22

e) -23-4= -27

f) 40-17=23