1 2 x 7 10 4 5 July 8, 2019 16 32 64 128 4 1 2 x )- 5 x 3 10 )= 7 4 1 4 5 x 2 2 7 x 10 9 4x 1 2 x )- 5x x 3 10 )= 7 4 7 x 10 1/2