Whenever you're completing operations on real numbers, we need to keep in mind several Real Number Properties:

Property 1: Adding number $a$ to number $b$ is the same thing as adding number $b$ to number $a$.

$$a+b=b+a$$

Property 2: Brackets have no impact when we are just multiplying or adding: $$3 + (4 + 5) = (3 + 4) + 5 = 3 + 4 + 5$$ $$3 \times (4 \times 5) = (3 \times 4) \times 5 = 3 \times 4 \times 5$$
Property 3: The distributive law: $$a (b + c) = a \times b + a \times c$$
Property 4: $0$ added to a number returns the number itself, and $0$ multiplied by a number returns $0$.