Jawabanmu

2014-02-12T17:03:14+07:00
11 = 8 - y 
11 - 8 = -y
   3    = -y
   -3   = y
2014-02-12T17:31:46+07:00
11 = 8-y
11-8 = 8 - y -8
(3 = -y ) dikali -1
-3 = y