Question

.
If
2 3 + = 2
x y
; − −
4 9 = 1
x y
, find the value of x + y

Answer 1

Answer:

Step-by-step explanation        Multiplying both sides by xy, we get :

Now, multiplying the first equation by (2) and subtracting from the second one, we get :

Hence, substituting the value in either equation and solving for y, we get :

Hence, we get : ( x , y ) = ( 1 , 3 ) as the solution