7 6 1 9 x 3 2 July 8, 2019 16 32 64 128 7 8 9 x 4 5 6 1 2 3 5 6 7 9 x 4 3 1 2 1 3 3 6 7 9 x 12 21 11 9 7 6 x 2 1 3 2 4x 9 7 6 )+ x 1 x 3 6 7-x=3 9 7 6÷x=2 1/9÷2 4/9 6 7/9-x=4 2/9
