2x 3y 4 y 2 July 8, 2019 16 32 64 128 2x 3y 4 x y 2 2x 3y =- 4 y =- 2x 4 Y 3x =- 4 2x 3y =- 21 2x 3y 4 y 5x 27 2x 3y 4 3x y 2 2x 3y 4 y 5x 27 substitution 2x 3y 4 3x 4y 23 2x 3y 4 2x y 3 Simplify 2x 3y 4 3x y 2 Y 2x 4 3y 21x 15 8x 3y 4 2x y 2 4 2x 3y 5 3x y =- 2 2x 3y 12 2x y 4 2x 3y 24 2x y 4 2x y 4 7x 3y 27
