Question

Choose all properties that were used to simplify the following problem:

1. [38 + 677] + (-38)
2. [677 + 38] + (-38)
3. 677 + [38 + (-38)]
4. 677 + 0
5. 677

A. additive identity
B. additive inverse
C. commutative property of addition
D. associative property of addition
E. distributive property

there can be more than one answer

Answer 1

DBA

Step 2-3
Step 3-4
Step 4-5

Answer 2

Step 1 to step 2 C
Step 2 to step 3 D
Step 3 to step 4 B
Step 4 to step 5 A

Answer 3

thanks