2x y 7 5x 3y 1 July 8, 2019 16 32 64 128 2x 3y 13 5x y 7 5x 3y 12 2x y 7 2x 3y 7 5x y 10 2x 3y 7 5x y 10 by elimination method 5x y =- 7 2x 3z 1 3y z 5
