1 2x 5 3 y 6 2z 1 7 July 8, 2019 16 32 64 128 1 2x 5 3 y 6 2z 1 7 và 2x yz =- 3 1) 6 1/3 * y + 6 5 = 2 5 - 2/3 * y 6) 1 - 1 1/2 * y + 3 2/5 * y = 1 1/3 * y - 2 7/15 * y + 2 1/2
