X 3 7 2 July 8, 2019 16 32 64 128 X 3 7 2x 1 5 X 3 7 2 5 X 3 7 2x X 3 7 =- 20 X 3 7 21 X 3 7 28 X 3 7 27 X 3 7 22 X 3 7 2x 5 X 3 7 26 X 3 7 2x 1 X 3 7 2 9 Х 3 7 2 8 3 x 7 )=- 21 3x 3 x 7 )= 24
