Solve the following system of equations: `2/x+3/y=9/(x y),\ \ \ 4/x+9/y=(21)/(x y),\ \ ` where `x!=0,\ y!=0`

Solve the following system of equations: 3/x-1/y=-9,\ \ \ 2/x+3/y=5

Solve the following system of equations: (2)/(x)+(3)/(y)=(9)/(xy),quad (4)/(x)+(9)/(y)=(21)/(xy), where x!=0,y!=0

Solve the following system of equations: 2x-3/y=9,\ \ \ \ 3x+7/y=2,\ y!=0

Solve the following system of equations: 3/(x+y)+2/(x-y)=2,\ \ \ \ 9/(x+y)-4/(x-y)=1

Solve the following system of equations: x/6+y/3=5,\ \ \ x/2-y/9=6

Solve the following system of equations: x/7+y/3=5,\ \ \ x/2-y/9=6

Solve the following system of equations: 3x-7y+10=0,\ \ \ y-2x-3=0

Solve the following systems of equations: x-2y=0, 3x+4y=20.

Solve the following system of equations : x-y=0.9,(11)/(2(x+y))=1:

Solve the following system of equations: x+y=2x y ,\ \ \ \ (x-y)/(x y)=6,\ \ x!=0,\ y!=0