6 3 x 7 9 July 8, 2019 16 32 64 128 6 3 7 x 2 9 6 3 4 x 1 7 9 1 6 3 5 x 7 9 6 3 7 x 3 1 9 3 x 10 6 7 9 2x 6 7 3 4 x 9 8 3 7 * 6 x 48 * 9 y 6 3 5 x 2 7 9 6 7 x 9 3 rug 6 4x 3 )+ 7 x 1 )= 9 3 5 6 x 7 9 6 x 3 )- 8 x 7 )= 88 9x