Question

solve 4/(x+y)- 3/(x-y) =5 , 9/(x+y) - 5/(x-y) = 4 questions answer

Answer 1

let (1/x+y) be A, and (1/x-y) be B.

Now 2A+5B = 3 and 7A - 2B = 4

by slowing we get A= ⅔ B= ⅓

i.e. 1x+y=⅔ and 1/x-y = ⅓

Therefore X= ⁴/9 and y = -¾