3 4 5 12x July 8, 2019 16 32 64 128 5 12x 3 4 1 2 9x 4 =- 3 5 12x 3 x 5 4 12x 5 4 3 3x 5 )= 12x 4 1 12x 3 4 5 6 5 12x 3 4 7 6 2 9x
