Question

30 – {20 – [14 – (3 + 5) + 4]} =

Answer 1

Resposta:

30 – {20 – [14 – (3 + 5) + 4]} =

30 – {20 – [14 – 8 + 4]}

30 – {20 – [6 + 4]}

30 – {20 – 10}

30 – 10

20