X 3y 5 x 4y 6 July 8, 2019 16 32 64 128 X 3y 5 2x 4y 6 5x 3y 7 x 4y 6 4 x 3y 8 6 x 4y =- 5 4 x 3y 8 6 x 4y =- 5 by elimination method