4x 10 5 6x July 8, 2019 16 32 64 128 4x 5 6x 7 9x 10 23 4x 10 5 =- 19 6x 1 4x 10 1 6x 5 5 x 2 )= 4x 10 6x 4x 5 x 6x 10
