Respostas

2014-06-05T22:58:15-03:00
{ -3 + [ -1 -2 -( 2 -1 ) +2] -1 }=
{ -3 + [-1 -2 -1 +2 ]-1}=
{-3 + [ -4 +2 ] -1}=
{-3 - 2 -1}= - 6

1 5 1
2014-06-05T22:58:42-03:00
{-3+[-1-2-(+2-1)+2]-1}
{-3+[-1-2-(+1)+2]-1}
{-3+{-1-2-1+2]-1}
{-3+[-2]-1}
{-3-2-1}
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