6 2 x 7 ) 5 July 8, 2019 16 32 64 128 6 2 x 7 )+ 5 9x 6 (- 2 x )=- 7 * 5x 20 6 1 2 x 5 7 8 2 6 7 x 4 5 6 x 7 5x 2 6 2 5 x 7 1 3 2 x 7 6 54 6 2 3 x 7 3 5 14 2 6 7 x 5 9 6 x 7 2x 5 6 2x 7 )= 5x 28 6 x 2 7 8 5 1 2 x 7 5 6 7 6 x 2 )= 3 5x 2 3 4 x 7 5 6