$\"\"$

The expression is $\"\"$ .

$\"\"$ (Replace x with 6, y with 2.8 and z with -5)

$\"\"$ (Subtract: $\"\"$ )

$\"\"$ (Multiply: $\"\"$ )

$\"\"$ (Product of two different signsis positive) $\"\"$

$\"\"$ (Add: 28 + 5 = 33)

$\"\"$ (The absolute value of |-11| is 11)

$\"\"$ (The absolute value of |33| is 33)

$\"\"$ (Subtract: $\"\"$ ) $\"\"$

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