X 6 3 6 x 4 1 July 8, 2019 16 32 64 128 6 x 3 )-( x 4 )=- 11 X 3 6 x 10 4 X 3 1 6 x 4 1 2 6 x 3 )- 4 x 4 )= 16 6 x 3 )- 1 x 4 )=- 11 X 3 5x 6 x 4 1 3 5 6 x 6 4 x 1 2 5 6 6 x 7 )= 3 4 x 1 $- 15 =- 6 3 x )+ 4 x 6 )$ X 6 x 8 4 1 x 6 3 6 x 3 4 x 1 2 grinding wheel