Jawabanmu

2014-09-11T16:31:36+07:00
5x - 6y + 2y + 8z + 9z - 10
5x - 4y + 17z - 10
5x - 4y + 17z = 10
2014-09-11T16:39:02+07:00
(5x-6y+8z)+(2y+9z-10) = 5x-6y+8z+2y+9z-10
                                     = 5x-6y+2y+8z+9z-10
                                     = 5x-4y+17z-10
        semoga membantu :)