Question

if x/y = 7 ,then x-y/x+y is ?​

Answer 1

Step-by-step explanation:

Since, x+y=7, then substituting corrensponding values in the equation 4xy=7(x+y) we get

xy=49/4

x+y=7

solving

y^2-7y+49/4=0

solving we see that x=y=7/2 and xy(x-y)=0