First plug in the equations, then simplify/cancel out terms until you get the answer
9.3 repeating is the answer.
Answer:
Associative
Step-by-step explanation:
The associative property of addition states that you can add numbers however they are grouped inside parentheses.
It doesn't matter where you put the parentheses. You will always get the same answer.
For example,

X = 400!
Have a goody day:)