Question

- 5 + [-6 – (- 4)]=
4 - [- 8 + (- 5)]=
-6 - [12 – (- 3)]=
20 - [- 5 – (7 – 4)]=
6 + {8 – [ - 5 + ( - 4) +10] -1}=

Answer 1

Respuesta:

1) - 7. 2) 17. 3) - 21. 4) 28. 5) 12.

Explicación paso a paso:

1) - 5 + [-6 – (- 4)]=

- 5 + [ - 6 + 4]

- 5 + [ - 2]

- 5 - 2 = - 7

2) 4 - [- 8 + (- 5)]=

4 - [ - 8 - 5]

4- [ - 13]

4 + 13 = 17

3) -6 - [12 – (- 3)]=

- 6 - [ 12 +3]

- 6 - [15]

- 6 - 15 = - 21

4) 20 - [- 5 – (7 – 4)]=

20 - [ - 5 - (3)]

20 - [ - 8]

20 + 8 = 28

5) 6 + {8 – [ - 5 + ( - 4) +10] -1}=

6 + {8 - [ - 5 - 4 +10] - 1}

6 + { 8 - [- 9 +10] - 1}

6 + { 8 - [1] - 1}

6 + { 7 - 1}

6 + { 6} = 12