If `(5x+7y):(3x+11y)=2:3`, then find x:y.

if (3x-2y):(5x-7y)=5:3 then, find x:y.

If (5x - 3y) : (2x + 4y) = 11 : 12 , then find x : y .

If (2x+y,7)=(5,y-3) then find x and y

If (2x+y,7)=(5,y-3) then find x and y

(i) x+2y=-7 and 3x-2y=-1, then find the value of x. (ii) If x+y=8 and 4y-x=2, then find the value of y. (iii) If 3x+5y=9 and 5x+3y=7, then find the value of x+y. (iv) If 3x-y=11 and x-3y=17, then find the value of x-y.

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

If x,y and zinR , and Delta=|(x,x+y,x+y+z),(2x,5x+2y,7x+5y+2z),(3x,7x+3y,9x+7y+3z)|=-16 , then find value of x.

IF 3x +5Y = 9 and 5x + 3y =7 then find the value of x+y