Question

AAAAAAA MR AJUDEM NOS CALCULO
4) calcule:
a) 5+(3-1)=
b) (20-)+(7+5)=
c) (-15)+(+3)+(-10)=
d (-5)-(-31)=
e) (+15)+(0)-(-5)
f) (-12)+(-9)+(+2)=
g)(-8)+(40)+(15)+(+20)=
h)(+9).(-2).(5)​

Answer 1

Resposta:

Explicação passo a passo:

a) 5+(3-1)= 5+2=7

b) (20-)+(7+5)=-20+12=-8

c) (-15)+(+3)+(-10)=-15+3-10=-22

d (-5)-(-31)=-5+31=26

e) (+15)+(0)-(-5)= +15+5=20

f) (-12)+(-9)+(+2)=-12-9+2=-19

g)(-8)+(40)+(15)+(+20)=-8+40+15+20=67

h)(+9).(-2).(5)​= -90