\"\"

\

The expression is \"\".

\

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

\

\"\"                   (Add: 3.6 + 6.6 = 10.2) \ \ To subtract –11 means add 11.

\

\"\"

\

\"\"                                              (Add: \"\")\"\"

\

The value of the expression is \"\".