Question

1 --Resolva as expressões
a) (+8) + (+6) = ?
b) (+6) - (-9) = ?
c) (-4).(-5) = ?
d) (-8): (-2) = ?
e) (-5) - (-6-4-2) = ?​

Answer 1

→ Cálculo :

A) ( + 8 ) + ( + 6 )

8 + 6

14

B) ( + 6 ) - ( - 9 )

6 + 9

15

C) ( - 4) · ( - 5 ) = +20

D) ( - 8) ÷ ( - 2 ) = +4

E) ( - 5 ) - ( - 6 - 4 -2 )

- 5 - ( - 10 - 2 )

- 5 - ( - 12 )

- 5 + 13

7