Question

SOLVE THE FOLLOWING..​

Answer 1

Explanation:

let 1/ x+y = a and 1/x-y = b

2a + b = 4 -(1)

a - 2b = -3 -(2)

by equalising cofficient method , we obtain

2a + b = 4

2a - 4b = -6

- + +

-----------------

5b = 10

b = 2

putting b in (1)

2a + 2 = 4

2a = 4-2

2a =2

a= 1