1. 

   Suffer New Member

   2/9z+7/18z-11/27z=2.5

    

   Suffer, 1 фев 2010

   #1
2. 

   JIuxa4 New Member

   2/9z+7/18z-11/27z=2.5
   z(2/9+7/18-11/27)=2.5 
   z(12/54+21/54-22)=2.5
   11/54z=5/2
   z=5/2:11/54
   z=12*3/11

    

   JIuxa4, 1 фев 2010

   #2