5 1 4 x 9 1 2 July 8, 2019 16 32 64 128 5 1 4 x 9 1 2 lvl 5 1 4 x 9 1 2 psl 1 3 4 x 1 9 2 5 1 2 9 x 1 4 5 as a fraction 1 4 x 5 )+ 9 1 2x 5 3 4 x 9 1 2 envelope 5 + 9 = 14 5 1/9 x 4