SOLUTION: what properties are used in the following questions: 1. 3+[a+(-a)]=3+0 2. 3+[a+0]=3+a

Algebra ->  Distributive-associative-commutative-properties -> SOLUTION: what properties are used in the following questions: 1. 3+[a+(-a)]=3+0 2. 3+[a+0]=3+a      Log On


   

Question 363340: what properties are used in the following questions:
1. 3+[a+(-a)]=3+0
2. 3+[a+0]=3+a
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
1. additive inverse property,
2. additive identity property.