Opening parentheses and solving everything inside them is the first step in the order of operations.
In every exercise, we first solve what is inside of the parentheses.
We write the result above the parentheses in a small arc or in place of the entire expression inside the parentheses.
If multiplication and division appear inside the parentheses along with addition and subtraction, multiplication and division come first, and only then do we proceed to addition and subtraction from left to right.