6 3 5 x 15 10 July 8, 2019 16 32 64 128 2 4x 3 )+ 5 =- 6 x 3 )+ 10x 15 1 2 x 10 )= 3 5 x 15 )- 6 25 15 6 3 x 5 10 10 5 x 3 15 6 2 6/15 x 5
