Question

efetue as adições
a) (+8)+(-3)+(+7)=
b)(+1)+(-4)+(+10)=
c)(+2)+(-9)+(-8)=
d)(-5)+(-2)+(+3)=
e)(-12)+(-9)+(+1)=
f)(-8)+(+10)+(-15)+(-20)=​

Answer 1

Resposta:

a) (+8) + (-3) + (+7) = 12

b) (+1) + (-4) + (+10) = 7

c) (+2) + (-9) + (-8 ) = -15

d) (-5)  + (-2) + (+3) = -4

e) (-12) + (-9) + (+1) = -20

f) (-8) + (+10) + (-15) + (-20) =​ -33

Answer 2

Resosta:

a) 12

b)7

c)-15

d)-4

e)-20

f)-33

Explicação:

a) (+8)+(-3)+(+7)=

8-3+7=

5+7=

12

b)(+1)+(-4)+(+10)=

1-4+10=

-3+10=

7

c)(+2)+(-9)+(-8)=

2-9-8=

-7-8=

-15

d)(-5)+(-2)+(+3)=

-5-2+3=

-7+3=

-4

e)(-12)+(-9)+(+1)=

-12-9+1=

-21+1=

-20

f)(-8)+(+10)+(-15)+(-20)=

-8+10-15-20=

2-15-20=

-13-20=

-33