10 4x 7 2x 6 July 8, 2019 16 32 64 128 6x 10 4x 7 2x 10 2x 7 )- 5 4x 2 )=- 60 5 6x 10 )= 7 4x 7 )+ 2x 10 6x 3 2x 7 4x 10 2x 3 )- 7 4x 6 )= 2 6x 7 x 10