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Respondido

1. Resolva as seguintes expressões:
a) 19 – ( 9 + 8 + 1)
b) –18 + [– 2 – (– 5 + 40)]
c) 20 – {– 10 + [+20 – (– 20 + 10)]}
d) 27 ÷ (–9)
e) 64 ÷ 4

Resposta :

KAROLOLIVEIRA716ON

Resposta:

a) 1

b) - 35

c) 0

d) - 3

e) 16

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