Question

What is the property of 12.2 + 18.6 + –4.3 + (–18.6)

Answer 1

Well the answer would be 7.9.
If I'm correct what you are asking is that the first property you use is addition.

Answer 2

1. commutative property

2. associative property

3. additive inverse

Explanation:

i took the test <3