13 5 x 10 7 July 8, 2019 16 32 64 128 13 5 x 10 7 as a fraction 13 10 x 5 2 7 2 70 5 x 13 10 13/10 x - 5/2 = 7 phần 2 13 5 x 7 13/5 x 5 5 13 7 - * 13 5 x
