4x 3y 5 x 2y 4 July 8, 2019 16 32 64 128 4x 3y 17 5x 2y 4 4x 3y =- 1 5x 2y 4 4x 3y 6 5x 2y 4 2y x 4 4x 3y 5 solution 2y x 4 4x 3y 5 system of equations