6x 5 7x 4 July 8, 2019 16 32 64 128 6x 5 7x 4 24x 3 28x 2 6x 5 3 7x 4 )+ 7 18 6x 5 4 7x 6x 3 x 5 ) 7x 4 5 6x 1 7x )* 42 82 17 2 6x 5 )= 4 7x 2 5 3 7x 4 )= 6x 13 6x 5 4x 7x 1 10 x 6x 5 7x 3 12x 4 6x 5 3x 4 7x 4x 4 7x 6x 5 4x 4 7x 5 6x 4 210 3x 5 7x 4 6x 2 14x 5 7x 4x 2 6x X 5 4x 7x 6x 15