If 
then write the value of (x + y).
If 
,
Then a=e, b=f, c=g, d=h
Given, 
,
So, x-y = 1, x+y =5, 2y = 4 and 2y+z = 9
Therefore, x+y = 5
Conclusion: x+y = 5
(Given answer is wrong)
1
If then write the value of (x + y).
If ,
Then a=e, b=f, c=g, d=h
Given, ,
So, x-y = 1, x+y =5, 2y = 4 and 2y+z = 9
Therefore, x+y = 5
Conclusion: x+y = 5
(Given answer is wrong)