3 10x 7 1 2 July 8, 2019 16 32 64 128 3 2x 1 )+ 6x 10x 7 3 5x 7 10x 1 2x =- 56 3 5x 7 10x 1 2x 6x 3 11x 2 10x 7 2x 1 1 3 7 10x 57 20 7 x 10
