Question

Resolva: 3 – { - 5 – [ 8 – 2 + (- 5 + 9 ) ] } =
a) +22
b) +18
c) -21
d) -23

Answer 1

Resposta:

3-{-5-[8-2+(4)]}

3-{-5-[8-2+4)]}

3-{-5-[10]}

3-{-5-10}

3-{-15}= 3+15= 18