[" (4) ",(x+y)/(xy)=2],[,(x-y)/(xz)=6]

(xy)/(x+y)=6/5 ; (xy)/(y-x)=6

(xy)/(x+y)=(6)/(5)(xy)/(y-x)=6

Solve: (x+y)/(xy)=2 and (x-y)/(xy)=6

The value of y when (x+y)/(xy)=2" and "(x-y)/(xy)=6 is

Solve the simultaneous equations : (6x+3y)/(xy) = 6, (2x+4y)/(xy) = 5

(x)/(y)*(y)/(xz)*(z^(2))/(xy)

Show that Delta=|((y+z)^2,xy,zx),(xy,(x+z)^2,yz),(xz,yz,(x+y)^2)|=2x y z(x+y+z)^3 .

If x,y,z are positive numbers is Adot P; then (a) y^(2)>=xz(b)xy+yz>=2xz(c)(x+y)/(2y-x)+(y+z)/(2y-z)>=4(d) none of these