Question

53 – {20 – [30 – (15 – 1 + 6) + 2]}

Answer 1

Resposta:

45

Explicação passo-a-passo:

53-{20-[30-(15-1+6)+2]}

53-{20-[30-(21-1)+2]}

53-{20-[30-(20)+2]}

53-{20-[30-20+2]}

53-{20-[32-20]}

53-{20-[12]}

53-{20-12}

53-{8}

53-8

45