math question......what is 2a-2a?? Is it "a" or zero?

2a-2a is zero, unless a is equal to infinite.

zero. its like saying 3-3 = 0

It's zero...because if there's 2 a's...and you take 2 a's away...theres no a's left? (:

Its zero

zero

2a-2a = 0 .The answer is zero because when like terms are subracted from each other , then the answer is always zero and 2a=2a that is they are like terms with same coefficient 2.Good Luck.....

2a - 2a
= 0a
= 0

2a - 2a = 0