Question

Calcule o valor das seguintes expressões

a)-[-(-8)]
b)-[-(-6+9)]
c)-10+7+[-(-9)]
d)(-5)+[-(-4)]
e)-[-(2+4)]
f)-[10+(-8)]
g)0-(-4-8)+3
h)-[-2-(-1-3)]
i)-3-[-(-4+5)]
j)-[(-1+3)-4]
l)-[-2-(-7)-1]
m)-[-3-8-(5+4)]

Answer 1

a)-[-(-8)]

-[+8]

-8

b)-[-(-6+9)]

-[-(+3)]

-[-3]

+3

c)-10+7+[-(-9)]

-3 + [+9]

+6

d)(-5)+[-(-4)]

(-5) + [+4]

-5 + 4

- 1

e)-[-(2+4)]

-[-(6)]

-[-6]

+6

f)-[10+(-8)]

-[10 - 8]

-[2]

-2

g)0-(-4-8)+3

0 - (-12) +3

12 + 3

15

h)-[-2-(-1-3)]

-[-2-(-4)]

-[-2 +4]

- [2]

-2

i)-3-[-(-4+5)]

-3-[-(+1)]

-3-[-1]

-3 + 1

-2

j)-[(-1+3)-4]

-[(+2)-4]

-[- 2]

+2

l)-[-2-(-7)-1]

-[-2 +7 - 1]

-[5 - 1]

-[4]

- 4

m)-[-3-8-(5+4)]

-[- 11 - (9)]

- [-20]

+20