Question

resolva as seguintes expressões numéricas:

Answer 1

A) S={-25/3}
B) S={3}
C) S={-388/45}

Answer 2

a) [(-8) + (+1/3)] + (-3/2)⁻¹ =

[ (-8) + 1/3 ] + (-2/3) =

[(-24 + 1)/3] + (-2/3) =

-23/3 -2/3 =

Resposta: -25/3

Se for :

[(-8) + (+1/3)] : (-3/2)⁻¹ =

[(-8) + 1/3] : (-2/3) =

[-8 + 1/3] . -3/2 =

-24+1/3 . -3/2 =

-23/3 . -3/2 =

69/6 ⇒ simplifica por 3

23/2

Resposta: 23/2

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b) -8/9 . (-1 - 1/2)³ =

-8/9 . (-3/2)³ =

-8/9 . -27/8 =

216/72

3

Resposta: 3

c) - 2⁴ . {- 0,75 + [(5/6 + 0,6) : 3/2 + 1/3]} =

- 16 . {- 75/100 + [(5/6 + 6/10) : 3/2 + 1/3]} =

- 16 . {-3/4 + [(5/6 + 3/5) : 3/2 + 1/3]} =

-16 . {-3/4 + [43/30 . 2/3+ 1/3]} =

- 16 . {-3/4 + [86/90 + 1/3]} =

- 16 . {-3/4 + [43/45 + 1/3]} =

- 16 . {-3/4 + 58/45} =

- 16 . 7/180 =

- 1552/180

- 388/45

Resposta: - 388/45