Question

( + 12 ) + ( + 21)
b) ( + 13 ) +(+7)
c) ( + 23 ) + ( + 21)
d) ( - 12 ) + (-11)
e) (- 23 ) +(-4)
0(- 21 )+ (- 12)
g) ( + 10)+ ( - 13 )
h) (+21)+ ( - 23 )
D ( + 40 ) + (-17)
j) (* 3)+(-2) + (-5)
k) ( - 2) - (+1)-(+5)
1) ( + 4)+ (-2) - (+3)
m) (+5)-(-3)-(-1)
n) ( + 4)+(-6)-(+7)-(-6)+ ( + 7)
0) (-3)-(-5)+(-6)+(+8)-(-4)​

Answer 1

A- 33
B- 20
C- 44
D- -23
E- -27
F- -33
G- -3
H- -2
I- 23
J- -4
K- -8
L- -1
M- 9
N- 4
O- 8

Answer 2

Resposta:

a) (+12)+(+21) = +33

b)(+13)+(+7)=+20

c)(+23)+(+21)=+40

d)(-12)+(-11)=-23

e) (-23)+(-4)=-27

f)(-21)+(-12)=-33

g) (+10)+(-13)=-23

h)(+21)+(-23)=+2

i)(+40)+(-17)=+17

j)(* 3)+(-2) + (-5)=? eu não sei se o sinal do 3 é + ou -

k)(-2)-(+1)-(+5)=-8

l)(+4)+(-2)-(+3)=-1

m)(+4)+(-6)-(+7)-(-6)+(+7)=+4

n)(-3)-(-5)+(-6)+(+8)-(-4)=+8