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Select the reason that proves this statement


Select the reason that proves this statement.
Theorem: If a + c = b + c, then a = b.

1. Identity property of addition

2. Property of opposites

3. Given

4. Commutative property of addition

5. Associative property of addition

Addition property of equality

Its actually “the additive inverse property”.

A number c’ is called the additive inverse for c if c + c’ = 0 where 0 is the “identity element”.

The identity property of addition is the existence of the element ‘0’ such that for any elementc, c +0 = c.

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