X 2y 9 2x y 8 July 8, 2019 16 32 64 128 X 2y 9 and 2x y 8 elimination method X 2y 9 and 2x y 8 substitution method The value of x and y x 2y 9 2x y 8 is X 2y 3z 9 2x y z 8 3x 2y z 5
