X y 5 2x y 4 solve July 8, 2019 16 32 64 128 X y 5 2x y 4 solve graphically X y 5 2x 3y 4 solve by elimination method X y 5 2x 3y 4 solve X y 5 2x 3y 4 solve by substitution method X 2y 5 2x y 4 solve graphically Solve x y 5 and 2x y 4 by substitution method Solve by graphical method x y 5 2x y 4 X+y 2 5+z xy