Determine whether each sentence is sometimes, always, or never true. Explain reasoning.

a.

The equation is .

is sometimes true.

When , the statement is true.

Example: but .

b.

The equation is .

is always true.

This is the Additive Identity Property.

For any value of , the stament is true.

Example: and .

(a) is sometimes true.

(b) is always true.