Question

determine o valor numerico da expressao
{(–1) + [(–6) – (–3 +5)] * (–1)} * {(–8) + (–5 +6) * (–7)} 

Answer 1

{(–1) + [(–6) – (–3 +5)] * (–1)} * {(–8) + (–5 +6) * (–7)} 

{(–1) + [(–6 – 2] * (–1)} * {(–8+1) * (–7)} 
{(–1) + [(– 8)] * (–1)} * {(– 7) * (–7)} 
{(–1) + [(+ 8] * (–1)} * { + 49} 
{–1 +  [(+ 8) * (–1)} * { + 49}]
{–1  + (+ 8) * ( - 49)}

 { - 1 - 392}
    - 393