7x 5 3y 2 July 8, 2019 16 32 64 128 7x 3y =- 5 5x 2y 1 7x y 5 21x 3y 10 7x 3y =- 5 3x 2y 11 7x 3y 5 4x y 2 7x 3y =- 5 dan 5x 2y 1 5 3y 7x 3 2y 7x 3y =- 25 4x 5 y 7x 3y 5 vĂ 4x y 2 7x 3y 2 )-( 3x 2y 5 5 7x 2y )- 4 3y 2x 7x 3y 5 x 2 y 3 2 2x 3y 7x 5 2x 0y )( 7x 3y 5 2x 4y 5 * 7x 3y 7 9x 2y 5 7x 3y 13