$\"\"$

The word $\"\"$ sum $\"\"$ means addition operation and its symbol $\"\"$ .

The word $\"\"$ the absolute value of $\"\"$ $\"\"$ represents $\"\"$ .

The additive identity is zero.

The word $\"\"$ The sum of the absolute value of $\"\"$ and the additive identity $\"\"$ represents $\"\"$ .

The expression is $\"\"$ .

$\"\"$

$\"\"$ . $\"\"$

The value of the expression is $\"\"$ .