3 3 5 x 7 2 chia 7 5 July 8, 2019 16 32 64 128 3 3 5 x 7 phần 2 chia 7 5 2 3 chia 5 7 x 5 7 chia 2 3 1934 5 x 7 = 35 3 x-5=x+3 ( 5 3 − 7 3 )⋅ 6 5
