Question

5) +(-3 + 5 + 2 + 1) - (-8 – 4 – 9 - 5)


6) +(-4 + 7 + 2) + 9 - (-3 + 4 - 3)



7) -(–5 + 6 – 3 + 6) + 3 - (+5 – 2 + 1)





8) +(-8 – 3 - 9) + 4 + (-2 + 9)





9) –(-5 - 3) - (+4 + 7 + 2 + 3)







10) –2 - 4 + (-8 + 4 – 6 + 7)


11) –3 + (-5 + 4) - (-8 + 3 + 9)




12) 4 - (-7 + 4 - 5) + (-5 + 1)

Answer 1

Respuesta:

5) +(-3 + 5 + 2 + 1) - (-8 – 4 – 9 - 5)

+ ( 2 + 3 ) - ( - 12 - 14)

+ 5 - ( -26)

+5 + 26

+31

6) +(-4 + 7 + 2) + 9 - (-3 + 4 - 3)

+ ( 5 ) + 9 - ( -2)

+ 5 + 9 + 2

+ 16

7) -(–5 + 6 – 3 + 6) + 3 - (+5 – 2 + 1)

- ( 4 ) + 3 - ( 4)

- 4 +3 - 4

- 5

8) +(-8 – 3 - 9) + 4 + (-2 + 9)

+ ( - 20 ) + 4 + ( 7)

- 20 + 4 + 7

- 9

9) –(-5 - 3) - (+4 + 7 + 2 + 3)

- ( -8) - ( 16)

+ 8 - 16

- 8

10) –2 - 4 + (-8 + 4 – 6 + 7)

- 6 + ( - 3 )

- 6 - 3

- 9

Explicación paso a paso:

- ( - a ) = + a

- ( + a ) = - a

+ ( - a) = - a

+ ( + a ) = + a