how do you braille an equation that has the instruction "use parentheses" in a problem like 3 x 3 x 6 = where the student is supposed to add the parenthese around a set of numbers to make the equation correct. I'm unsure of the spacing and the use of the number sign.
If you have not been instructed to braille the material as consumable (with the intention that the student will braille or write on the actual embossed copy) you will not include any accomodations for the student to enter answers to questions. Even then, I would think the student would be re-writing the expression with the parentheses in place, and not actually trying to enter them into the embossed text. If you have been told to leave room for inserting the parentheses, you would have to insert spaces between each number and operation sign so that you wouldn't give away the correct answer by the spaces you added.