Question

resolver las siguientes operaciones combinadas aplicando la ley de signos

a) 1-(-3+6+1)-[4-(6-3+1)-2]
b) 6-(-9+7-1)-[3-(-5+4+6)-1]
c) 28-[21-(12-3)-7]
d) [-2+3×(2-5)÷3]-[(3-5+2)-2×(3-4)]
e) 8-[6-(-3+7)-6]-4​

Answer 1

a) 1– (– 3 + 6 + 1) – [4 – (6 – 3 + 1) – 2]

Resolviendo.

1 – (4) – [4 – (4) – 2]

1 – 4 – [– 2]

– 3 + 2

Solución.

– 1

b) 6 – (– 9 + 7 – 1) – [3 – (– 5 + 4 + 6) – 1]

Resolviendo.

6 – (– 3) – [3 – (5) – 1]

6 + 9 – [– 3]

15 + 3

Solución.

18

c) 28 – [21 – (12 – 3) – 7]

Resolviendo.

28 – [21 – (9) – 7]

28 – [5]

28 – 5

Solución.

23

d) [– 2 + 3 × (2 – 5) ÷ 3] – [(3 – 5 + 2) – 2 × (3 – 4)]

Resolviendo.

[– 2 + 3 x (– 3) ÷ 3] – [(0) – 2 × (– 1)]

[1 x – 1] – [2]

– 1 – 2

Solución.

– 3

e) 8 – [6 – (– 3 + 7) – 6] – 4

Resolviendo.

8 – [6 – (4) – 6] – 4

8 – [– 4] – 4

8 + 4 – 4

Solución.

8