4 3 7 1 14 July 8, 2019 16 32 64 128 4 7 1 3 z 13 14 5 8 1 5x 4 7 3 10x 1 14 7 4 x 3 )= 1 14 2 3 4 7 and 14 1 of the model articles 4 and 6/7-3 and 1/14