" (iii) जर "3x+5y=9" आणि "5x+3y=7," तर "x+y" ची किमत काढा."

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

If 5x+y=19 and x-3y=7 , then x+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.