Questions on Algebra: Real numbers, Irrational numbers, etc answered by real tutors!

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Question 153829: tell whether the statement is true for all REAL numbers a,b,c.
PROBLEM:(a+b)+c=a+(b+c) and can you please explain how or why you came to the conclusion?: tell whether the statement is true for all REAL numbers a,b,c.
PROBLEM:(a+b)+c=a+(b+c) and can you please explain how or why you came to the conclusion?
Answer by Fombitz(1744) About Me  (Show Source):
You can put this solution on YOUR website!
This statement is true for all real numbers.
This is the associative property of addition.
It is a basic property of arithmetic, can't be proven.
It's kind of the rules to the game we agree to when we do math.
Just like 5*0=0.
Why?
Because we say so, we say that anything times zero equals zero.