Solve the system of the following equations: (Using matrices):

SOLUTION:

Putting  and  in the given equations,

  

 the matrix form of given equations is  [AX= B]

Here,   A =  X =  and B = 

 

= 

= 

  exists and unique solution is  ……….(i)

Now     and 

and 

 adj. A =  = 

And 

 From eq. (i),

 

= 

=