properties of operation

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What it the addition property of operation? (3+8)+5

What it the addition property of operation? (2+3)+4=

What it the addition property of operation? 9+3=3+9

What it the addition property of operation? 9+(4+6)

What it the addition property of operation? 10+3=3+10

What it the addition property of operation? 6+7=6+7

What it the addition property of operation? 5+3=3+5

What it the addition property of operation? 0+3=3