Respostas

2014-02-12T21:19:40-02:00
-20-{-4[-8+(+12-6-2)]+2+3}
-20-{4[-8+12-6-2]+2+3}
-20-{4-4+2+3}
-20-5
-25

32(-27+1)+73
32-26+73
79


2014-02-12T21:22:41-02:00
32(-27+1)+73
=32-26+73
=8+73
=81