Question

y by x + Y is equal to 1 by 5 x into y by x minus Y is equal to 1 by 7​

Answer 1

Answer:

y/(x+y) = 1/5

xy/(x-y) = 1/7

So from first eqn :

5y = x+y

4x = y

Inputting in y's value in second eqn :

=> x(4x)/(x-4x) =1/7

=> x = -3/28

and y = -3/7

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