November 29, 2017 at 2:24 pm #29950
Thank you for the thought-out question. In the example you give and in similar circumstances, the enclosed variable or number does not need to be transcribed in Nemeth Code.
Grouping signs in and of themselves do not "modify" what they enclose. They are often merely punctuation. In other words, a variable or number enclosed in signs of grouping for purposes of the narrative text and not because an operation is being performed is not "combined" with the grouping signs the way the variable or number would be "combined" with a minus sign, a decimal point, etc.
So, you do not need any Nemeth switch indicators for the sentence "Select the pair of inequalities that models the possible temperatures in the summer (s) and in the winter (w)."
Please do let me know if you have follow-up comments or questions.