Question

Escreva na notação simplificada as expressões:
a) (– 6 ) + ( −5 ) =
b) (– 1 ) − ( −15 ) – ( −7 ) =
c) (– 6 ) + (− 2) + (−3 ) – ( +4) =
d)( +9 ) − ( −12 ) =
e) (– 90 ) + ( −15 ) + (−2 ) =
f) (– 6 ) + (−5 ) + ( −5 ) (− 9 ) =
g) ( +56 ) − (+12 ) =
h) (– 3 ) − ( −5 ) – (+ 8) =
i) (– 6 ) + (−5 ) − (− 6 ) + (−5 ) =
j) ( −40 ) + ( +20 ) =
k) (– 6 ) + (−5 ) + (− 9 ) =
l) (– 6 ) + ( −5 ) − ( +9 ) − (−12 ) =

Answer 1

Resposta:

Explicação passo a passo:

Escreva na notação simplificada as expressões:

a) (– 6 ) + ( −5 )

= - 6 - 5

= - 11

b) (– 1 ) − ( −15 ) – ( −7 )

= - 1 + 15 + 7

= 14 + 7

= 21

c) (– 6 ) + (− 2) + (−3 ) – ( +4)

= - 6 - 2 - 3 - 4

= - 8 - 7

= - 15

d)( +9 ) − ( −12 )

= 9 + 12

= 21

e) (– 90 ) + ( −15 ) + (−2 )

= - 90 - 15 - 2

= - 105 - 2

= - 107

f) (– 6 ) + (−5 ) + ( −5 ).(− 9 )

= - 6 - 5 +45

= - 11 + 45

= 34

g) ( +56 ) − (+12 )

= 56 - 12

= 44

h) (– 3 ) − ( −5 ) – (+ 8)

= - 3 + 5 - 8

= 2 - 8

= - 6

i) (– 6 ) + (−5 ) − (− 6 ) + (−5 )

= - 6 - 5 + 6 - 5

= - 11 + 1

= - 10

j) ( −40 ) + ( +20 )

= -40+20

= -20

k) (– 6 ) + (−5 ) + (− 9 ) = -6-5-9

= -11-9

=-20

l) (– 6 ) + ( −5 ) − ( +9 ) − (−12 )

= - 6 - 5 - 9 + 12

= - 11 + 3

= - 8