Tìm xax 1 27 13 5 chia 4 5 July 8, 2019 16 32 64 128 X chia 3 - 7 1 = 1 56 X chia 3 - 7 2 = 1 56 X chia 3 - 7 2 = 1 35 Tìm y 4536 chia y = 9
