5 7 x 4 2 July 8, 2019 16 32 64 128 5 7 x 4 2 3 5 1 7 x 4 2 3 5 x 7 2x 4 7 x 4 )= 5 2x 3 )+ 11 5 x 7 )= 3 x 4 )- 27 2 5 7 x 4 1 2 5 x 4 )= 7 2x 1 5 x 4 )= 7x 2 4 5 x 7 )= 20 7 x 4 )+ 5 3 2x 5 4 x 7 2 1 9 2 x 7 * 5 x 4 1250 5 x 7 )+ 2 3x 4 1 5 17 x 7 2 4 11 4 7 x )- 5 2 =- 6 3