Respostas

2014-05-21T12:34:28-03:00
-73-22-45-92+250= -232+250= 18
2014-05-21T12:46:54-03:00
(-73)+(-22)+(-45)+(-92)+(+250)
-73-22  -45-92  +250
-95    -137
    -42+250
       208
espero ter ajudado!!!