Question

qual e a resposta de 53-{20-[30-(15-1+6)+2]}

Answer 1

53-{20-[30-(15-1+6)+2]}
53-{20-[30-20+2]}
53-{20-12}
53-8
45

Answer 2

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

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

53 - {20 - 12} =

53 - 8 =

$\boxed{45}$