Question

1) Calcule o valor das expressões:
a) – [ – (– 8) ]
b) – [ – (– 6 + 9) ]
c) – 10 + 7 + [ – (– 9) ]
d) (– 5 ) + [ – (– 4) ]
e) – [ – ( 2 + 4 ) ]
f) – 10 [ 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) ]
2) Calcule o valor das expressões:
a) 10 - 2) – 3 + ( 8 + 7 - 5)
b) 15 + [ - 4 – 4 ( - 2 + 7) ]
c) – 4 + [ - 10 + ( 5 – 2 ) + 4]
d) 4 – 7 – [ - 10 + ( 5 - 2) + 4]

Answer 1

Resposta:

$1)a) - [ - (- 8) ]\\-8$

$b) - [ - (- 6 + 9) ]\\3$

$c) - 10 + 7 + [ - (- 9) ]\\-3+9\\6$

$d) (-5 ) + [ -(- 4) ]\\-5+4\\-1$

$e) - [ - ( 2 + 4 ) ]\\2+4\\6$

$f) - 10 [ 10 + (-8 ) ]\\-2$

$g) 0 - ( - 4 - 8) + 3\\12+3$

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

$i) - 3 - [ - ( - 4 + 5) ]\\-3+1\\-2$

$j) - [ ( - 1 + 3) -4 ]\\-2+4\\2$

$l) - [ - 2 - ( - 7) - 1 ]\\-5+1\\-4$

$m) - [ - 3 - 8 - ( 5 + 4) ]\\11+9\\20$

$2)a) (10 - 2) - 3 + ( 8 + 7 - 5)\\8-3+10\\15$

$b) 15 + [ - 4 - 4 ( - 2 + 7) ]\\15-24\\-9$

$c) -4 + [ - 10 + ( 5 - 2 ) + 4]\\-4+(-3)\\-7$

$d) 4 - 7 - [ - 10 + ( 5 - 2) + 4]\\-3-(-3)\\0$