Question

1. (2 + 6) + (5 – 8) 2. (5 – 9) + (2 – 12) 3. (7 + 3) – (5 + 4) = e) (8 – 12) – (2 – 5) 4. (10 – 7) – (–2 – 6) 5. – (8 + 4) + (5 – 9) 6. – (6 – 2) – (7 – 9)
7. (7 – 4) + (9 – 5) 8. (2 + 6) + (5 – 8) 9. (5 – 9) + (2 – 12)
10. (7 + 3) – (5 + 4) 11. (8 – 12) – (2 – 5) 12. (10 – 7) – (–2 – 6)
15. (2 – 10) + [5 – (8 + 2)] 16. (12 – 3) – [1 – (2 – 6)] 17. [9 – (+5)] + [7 + (–10)]
18. [10 – (–2)] – [5 – (+12)] 19. [8 – (6 + 4)] – (5 – 7) 20. [1 + (6 – 9)] – (8 – 12)

Answer 1

Explicación paso a paso:

1.-(2+6)+(5-8)

\ /. \/

8. +. 3

\. /

11.

2.-(5-9)+(2-12)

\/. V

4. +. 10

\. /

14.

4.-(10-7)-(2-6)

V. V

3. - 4

V

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