Question

solve
4/x+y -3/x-y=5
9/x+y-5/x-y=4
where x is not equal to 0 and x-y is not equal to 0
plz answer this question according to three marks

Answer 1

Answer:

I think this helps..

plz mark me as brainliest answer

Answer 2

Answer:

let. 1/x+y= u

and 1/x-y=v

the new equation form

4u-3v=5

9u-5v=4

solve the equation

(4u-3v=5)(-5)

(9u-5v=4)(3)

new equation

-20u+15v=-25

27u-15v=12

solve by elmination method

7u=-13

u=-13/7

4(-13/7)-3v=5

-52/7-3v=5

-3v=5+52/7

-3v=87/7

v=-29/7

u=1/x+y=-13/7

-13x-13y=7

v=1/x-y=-29/7

-29x+29y=7

-29x+29y=7

-13x-13y=7

solve the equation u will get the ans