Question

4) Resolva as expressões numéricas:

a) – ( +13 – 9 + 4) + (–16 + 23 – 5)
b) –9 – [+3 – ( 1 + 14 – 9) + 6 – 10]
c) +15 + { –7 – [+16 – 3 – (2 + 8 –1) +5] + 3}
d) –15 + [(–12) – (+4)] – (–7 – 4)
e) 45 – {51 + [(–3) – (+8)]}
f) (4 – 8) – {[7 + (+2 – 4) – (–5 – 13)] – 1}

Answer 1

Resposta:

a)-7 b)-3

Explicação passo-a-passo:

a) -(5+4)+(7-5)=

-9+2=-7

b)-9+6=-3