Question

– Desafio:

a) − [4 − (5 − 10 + 6)] + [−3 + (3 + 1 − 2)]=

b) {[(0 − 6) − (0 + 2)] + [(0 − 3) − (0 + 5)]} − (−20)=

c) 45 − {2 − [5 + 4 + (6 − 2) − (7 + 3 − 9) + 6] − 7}=​

Super Urgente!!​

Answer 1

Explicação passo-a-passo:

a)

- [4 - (5 - 10 + 6)] + [-3 + (3 + 1 - 2)]

= - [4 - (-5 + 6)] + [-3 + (4 - 2)]

= - [4 - 1] + [-3 + 2]

= -3 - 1

= -4

b)

{[(0 - 6) - (0 + 2)] + [(0 - 3) - (0 + 5)]} - (-20)

= {[-6 - 2] + [-3 - 5]} - (-20)

= {-8 - 8} - (-20)

= -16 + 20

= +4

c)

45 - {2 - [5 + 4 + (6 - 2) - (7 + 3 - 9) + 6] - 7}

= 45 - {2 - [5 + 4 + 4 - (10 - 9) + 6] - 7}

= 45 - {2 - [5 + 4 + 4 - 1 + 6] - 7}

= 45 - {2 - [9 + 3 + 6] - 7}

= 45 - {2 - [12 + 6] - 7}

= 45 - {2 - 18 - 7}

= 45 - {-16 - 7}

= 45 - {-23}

= 45 + 23

= +68