Why do you need parentheses?

Question

For the equation (7•4) + (2•3) why do you need parentheses?

Answer 1

You are correct, the parenthesis are not needed.

The answer is the same with or without the parenthesis because

the order of mixed operations says the multiplication is to be done before the addition.

Perhaps they are there for the benefit of the reader, so as to remind that multiplication

is done first.