Question

calcule
a)(+9)+(-5)=
b)(+3)+(-4)=
c)(-8)+(+6)=
d)(+5)+(-9)=
e)(-6)+(+2)=
f)(+9)+(-1)=
g)(+8)+(-3)=
h)(+12)+(-3)=
i)(+20)+(+12)=
j)(+20)-(+12)=
k)(-27)-(-30)=

​

Answer 1

Resposta:Segue as contas abaixo

Explicação passo-a-passo:

a)(+9)+(-5)-->+9-5--> +4

b)(+3)+(-4)-->+3-4--> -1

c)(-8)+(+6)-->-8+6--> -2

d)(+5)+(-9)-->+5-9--> -4

e)(-6)+(+2)-->-6+2--> -4

f)(+9)+(-1)-->+9-1--> +8

g)(+8)+(-3)-->+8-3--> +5

h)(+12)+(-3)-->+12-3--> +9

i)(+20)+(+12)-->+20+12--> +32

j)(+20)-(+12)-->+20-12--> +8

k)(-27)-(-30)-->-27+30--> +3