" If "12x+17y=53" and "17x+12y=63" then find the value of "(x+y)-

If 12 x + 17 y = 53 and 17 x + 12 y = 63 then find the values of (x + y )

Choose the correct alternative answer for each of the following question If 12x+17y = 48 and 17x+12y = 68 ,then what is the value of x-y ?

If 5x-2y = 17 and 3x +y =8 , then find the values of x and y .

If x=3 and y=4 , find the value of (15x) /(12y)

If 12x+13y=29 and 13x+12y=21 then the value of x+y is________

If 7x+5y=-17 and 5x+7y=-19, then find the value of (i) x-y (ii) x+y.

If 17x -5y=8 and 14 x -7y =-7, what is the value of 3x + 2y ?

If 10y=7x-4 and 12x+18y=1 . Find the value of 4x+6y and 8y-x .

If 12x+12y = 108 ,find the average of x and y.