4 2 7 x 2 3 7 July 8, 2019 16 32 64 128 3 2 7 2 4 7 x 2 1 7 3x 2 4 x 7 3 2 x 7 4 4 2 3 x 8 4 7 x 1 2 7 2 5 x 7 4 2 5 x 3 7 2 4 2x 7 1 7 )= 3 2 x 7 2 7x 3 14y )- 4 7 2 x 3 8y 5 4 3 4 7 4 x 2 2 7 5 9 4 7×3 2
