Question

In the following problem, which step uses the additive identity to get to the next step?

1. -18 + 73 + 18
2. -18 + 18 + 73
3. 0 + 73
4. 73

A. Step 1
B. Step 2
C. Step 3
D. Step 4

Answer 1

Step 3

Answer 2

The Additive Identity Property:

The additive identity is 0 because

a + 0 = a
and
0 + a = a

This is often written in one line...

a + 0 = a = 0 + a

Where a is any real number.

Answer 3

thinks ; )

Answer 4

No problem ^_^