Question

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

Answer 1

Resposta:

a) 8+6 = 14

b) (+6)-(-9)

6+9 = 15

c) (-4).(-5) = 20

d) -8/-2 = 4

e) (-5)-(-6-4-2)

(-5)-(-12)

-5+12 = 7

Answer 2

Resposta:

ITEM A) + 14

ITEM B) + 15

ITEM C) + 20

ITEM D) + 4

ITEM E) + 7

Explicação passo-a-passo:

ITEM A

( + 8 ) + ( + 6 ) =

+ 8 + 6 =

+ 14

ITEM B

( + 6 ) - ( - 9 ) =

+ 6 + 9 =

+ 15

ITEM C

( - 4 ) . ( - 5 ) =

+ 20

ITEM D

( - 8 ) : ( - 2 ) =

+ 4

ITEM E

( - 5 ) - ( - 6 - 4 - 2 ) =

( - 5 ) - ( - 10 - 2 ) =

( - 5 ) - ( - 12 ) =

- 5 + 12 =

+ 7