Question

1) Resolva as seguintes expressões numéricas:

a) -2-(5+8-3)+(2-5)
b) -4-(-6+6-2)+(-4+4)
c) -4-[(-4:2)]:[(-6:3)]
d) -3-[(-5-8•2)]+[(-4-8)]
e) -6[(-1-2-6)]:[(-20-11)]
f) -4-8-12=
g) -20-40+60=
h) +10•4-8+12:6=​

Answer 1

Respost

a) -2-(5+8-3)+(2-5)

-2-10+3

-2-7=-9

b) -4-(-6+6-2)+(-4+4)

-4-(-2)+0

-4+2=-2

c) -4-[(-4:2)]:[(-6:3)]

-4-[-2]:[-2]
-4-[+1]
-4-1=-5

d) -3-[(-5-8•2)]+[(-4-8)]

-3-[(-5-16)]+[-12]
-3-[-21]-12

-3-[-33]
-3+33=30

e) -6[(-1-2-6)]:[(-20-11)]

-6[-9]:[-31]
-6+3,4=-9,4

f) -4-8-12=
-4-20=-24
g) -20-40+60=

-20+20=0

h) +10•4-8+12:6=​

+10.4-8+2

+40-6=34