Question

efetue:
a) - ( - 6 + 4 - 1 ) =
b) - ( - 3 + 8 ) =
c) - ( - 3 - 1 ) =
d) - 6 - ( - 3 + 2 ) =
e) 18 - ( - 5 - 2 - 3 ) =
f) 20 - ( - 6 + 8 ) - ( - 1 + 3 ) =
g) - 32 - 1 - ( - 12 + 14 ) =
h) 7 + ( - 5 - 6 ) - ( - 9 + 3 ) =

Answer 1

Resposta:

a)

= - ( - 6 + 4 - 1)

= - ( - 3 )

= + 3

b)

= - ( - 3 + 8 )

= - ( + 5 )

= - 5

c)

= - ( - 3 - 1 )

= - ( - 4 )

= + 4

d)

= - 6 - ( - 3 + 2 )

= - 6 - ( - 1 )

= - 6 + 1

= - 5

e)

= 18 - ( - 5 - 2 - 3 )

= 18 - ( - 10 )

= 18 + 10

= 28

f)

= 20 - ( - 6 + 8 ) - ( - 1 + 3 )

= 20 - ( + 2 ) - ( + 2 )

= 20 - 2 - 2

= 16

g)

= - 32 - 1 - ( - 12 + 14 )

= - 33 - ( + 2 )

= - 33 - 2

= - 35

h)

= 7 + ( - 5 - 6 ) - ( - 9 + 3 )

= 7 + ( - 11 ) - ( - 6 )

= 7 - 11 + 6

= + 2

Bom espero ter ajudado!!