Solve the following pairs of equations

Given pair of equations is




And
  =
 = 



Now, put  and
 and  then the pair of equations becomes
 then the pair of equations becomes
 …(iii)
 …(iii)
and  …(iv)
 …(iv)
On adding both equations, we get



Now, put the value of v in Eq. (iii), we get



and 
Hence, the required values of x and y are  and
 and  respectively.
 respectively.