Priority of logical operations

Question

I need to create a truth table for the expression $$\overline{YZ\implies X}$$ Negation must be made at the beginning, before the rest of the actions, or at the very end? In the case of the negation of individual variables, then I understand that first it is done, and then the rest of the action?

Answer 1

Given that the overline covers the whole expression $YZ \Rightarrow X$, the negation is applied to that whole latter expression. That is, you need to first figure out the value of $YZ \Rightarrow X$, and then negate that. So it is the last operation you do for this expression.