Question

Efetue as expressões a seguir lembrando das regras de sinais
$a)+ 6 - 3 - 2 + 1 \\ b) + 13 - 8 + 9 - 10 \\ c)- 5 - 7 + 13 + 11 \\ d) - 4 + 13 + 8 - 2 \\ e) ( - 6) - ( + 4) - ( + 3) + ( - 1) + ( + 3) \\ f)( + 10) + ( - 4) - ( - 13) + ( + 12) \\ g)( - 8) + ( - 4) - ( - 13) + ( + 12) \\ h)( - 14) + ( + 15) + ( - 6) + ( + 4)$
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Answer 1

Resposta:

a) 6 - 3 - 2 + 1 = 3 - 1 = 2

b) 13 - 8 + 9 - 10 = 3 - 1 = 2

c) - 5 - 7 + 13 + 11 = - 12 + 24 = 12

d) - 4 + 13 + 8 - 2 = 9 + 6 = 15

e) - 6 - 4 - 3 - 1 + 3 = - 10 - 4 +3 = - 14 + 3 = - 11

f) 10 - 4 + 13 + 12 = 6 + 25 = 31

g) - 8 - 4 + 13  + 12 = - 12 + 25 = 13

h) - 14 + 15 - 6 - 6 + 4 = 1 - 12 + 4 = - 11 + 4 = - 7