If `3x+5y=9,5x+3y=7` then find the value of `x-y`.

If 2x+y=-2,3x-y=7 then find the value of x.

If 4x+5y=10,5x+4y=17 then find the value of x+y and x-y .

If 3x+4y=12 and 4x+3y=9 , then find the value of x+y

If 3x -y = 10 and x-3y= -2 find the value of x-y .

If x/y=13/6 then find the value of (3x+5y)/(3x-5y)

Choose the correct alternative answers for the following questions If 3x + 5y =9 and 5x + 3y= 7 , then what is the value of x + y ?

If x/y=13/6 then find the value of (2x^2+5y^2)/(2x^2-5y^2)

If the line 3x-4y=k touches the hyperbola x^2/5-(4y^2)/5=1 , then find the value of k.