Find `x` and `y` when `(7x-2y)/(xy)=5,(8x+7y)/(xy)=15`

Slve the following pairs of equations by reducting them to a pair of linear equations: (i) (7x-2y)/(xy)=5 (8x +7y)/(xy)=15 (ii) (1)/( 3x + y) + (1)/(3x -y) =3/4 (1)/(2 (3x +y)) - (1)/(2(3x -y))= (-1)/(8)

Solve the following system of equations: (7x-2y)/(xy)=5,quad (8x+7y)/(xy)=15

Solve for x and y:(xy)/(x+y)=(1)/(5),x+y!=0;(xy)/(x-y)=(1)/(7),x-y!=0

2x + y = (7xy) / (3), x + 3y = (11xy) / (3)

Find the value fo x:y, if (7x - 15y)/(4x + 6y) = (5)/(6).

Find the value of x:y, if (8x-10y)/(3x+4y) = (4)/(5) .

{:(2x + y = (7xy)/(3)),(x + 3y = (11xy)/(3)):}

If x+y=19 and x-y=7, then xy= ?

If x=3 and y=5 then verify: (7x+11y)^(2)=49x^(2)+154xy+121y^(2)