Signs of operation with negative numbers Home › Forums › Nemeth Code for Math and Science › Signs of operation with negative numbers This topic has 1 reply, 1 voice, and was last updated 12 years, 11 months ago by Chris Clemens. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts October 28, 2010 at 5:00 pm #10483 Chris ClemensKeymaster How do you show the following problem in braille? -7+-9 = ? This problem reads, negative seven plus negative nine equals ?Do I use the dot 5 between the plus and the negative signs?Thanks!Laura October 28, 2010 at 5:07 pm #20550 Chris ClemensKeymaster Yes, use the dot 5 to indicate that it is not a plus/minus sign. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) Everyone is free to read the forums, but only current NBA members can post. Become a member today. Click here to Login and return.