If x:y=3:7, then find (7x+3y):(9x-3y)

If x : y = 3 :4 then (7x + 3y) : (7x - 3y) = ?

If (x : y) = (3 : 4) then (7x + 3y) : (7x - 3y) = ?

If x:y=8:9, find the ratio (7x-4y):3x+2y

If x :\ y=8:9, find the ratio (7x-4y):3x+2ydot

If (x+y):(x-y)=7:3, then find the ratio (x^(3)+y^(3)):(x^(3)-y^(3))

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

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

3x+5y=9 and 4x+3y=7 then find x+y