2 1 x − 4 5 )= 8 7 July 8, 2019 16 32 64 128 2 1 4 x 5 7 8 1 2 3 x 4 5 6 7 8 1 2 x 4 3 5 6 divided by 7 8 4 5 x 1 2 x 7 8 as a fraction 1 2 x 5 8 y 1 3 x 4 7 y 3 5 8 x 2 1 4 x 7 5 8 7x 4 2 x 5 )= 8 x 1 7 1 2 5 3 4 x 8 0 20 0 6 x 7 1 2 x 4 5 1 8 1 4 x 5 phần 2 x 8 7