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16. What is the identity element of addition?
A. 0
B. 1
C. -1
D. 1/2
17. What property of integers justifies
20 + 3 = 3 + 20
A. Closure property
B. Commutative property
C. Identity property
D. Inverse property​

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16. ✏️ A. 0

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17. ✏️ B. Commutative property

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✧Hope it helps you

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Answer:

What is the identity element of addition?

A. - 0

Explanation:

Identity-element meaning

The element of a set of numbers that when combined with another number in a particular operation leaves that number unchanged. For example, 0 is the identity element under addition for the real numbers, since if a is any real number, a + 0 = 0 + a = a.

What property of integers justifies

What property of integers justifies 20 + 3 = 3 + 20?

B. - COMMUTATIVE PROPERTY

According to the commutative property of addition, when two numbers are added in any order the sum remains the same. This property applies even when more than two numbers are added, and the order of the numbers is changed, the sum still remains the same.

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