In: Advanced Math
Crammers Rule:



, 
 , 
 , 
1) 
 Unique
solution exists.
2) 
 Infinite solutions exists.
3) 
 No solution exists.
Solution is : 
, 
, 
Using this method now we will find the solution of the given problem.
As
4x-7y+2z=4,
3x-11y+5z=3,
-9x+4y+3z=1
Now we will calculate D, D1, D2 and D3
























As 
 Given problem
has a unique solution
,
, 






Thus final Solution :


