$\"\"$

\

The expression is $\"\"$ .

\

$\"\"$ (Substitute x = 3.6, y = 6.6 and z = -11)

\

To subtract 11 means add –11.

\

$\"\"$

\

$\"\"$ (Add: 6.6 + 11 = 17.6)

\

$\"\"$ (Absolute value of $\"\"$ )

\

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

\

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