7 x 3 1 4 x 10 1 2 July 8, 2019 16 32 64 128 1 1 7 x 10 1 2 x 6 3 4 10 1 2 x 1 3 7 x 4 2 5 4 x 1 )+ 7 x 3 )= 9 x 1 )+ 2x 10 7 x 10 7 x 1 3/4 7 x 10 1/2 7/10 x 3