Question

simplifique as expressões numéricas:
$- 9 - ( - 4) \times ( - 3)$
$- 1 - ( - 2) \times ( - 8) \times (4)$
$( - 1) \times ( - 2) \times ( - 3) \times ( - 4) - ( - 5)$

com conta

Answer 1

A)

- 9 - ( - 4 ) x ( - 3 ) =
- 9 - ( + 12 ) =
- 9 + 12 =
+ 3

B)

- 1 - ( - 2 ) x ( - 8 ) x ( + 4 ) =
- 1 - ( + 16 ) x ( + 4 ) =
- 1 - ( + 64 ) =
- 1 - 64 =
- 65

C)

( - 1 ) x ( - 2 ) x ( - 3 ) x ( - 4 ) - ( - 5 ) =
+ 2 x ( + 12 ) - ( - 5 )=
+ 24 +5 =
+ 29

Espero que tenha entendido