This is a tough question. Certainly many times (due to space constraints) we omit certain things off a graphic and explain the omission in a TN before the graphic, e.g. //The degree signs are omitted in the drawing below.// //The "inch" abbreviation is omitted from the measurements below.//
However leaving off the open and close simple fraction indicator or omitting the numerator in the fraction is a drastic omission which could interfer with the student interpreting the information correctly. I would not recommend making either of these modifications. I've sent an email to Betty Marshall (NBA Nemeth Committee Chair) and asked for her opinion as well.