\"\"

\

The expression is \"\".

\

\"\"            (Replace z with \"\"5)

\

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

\

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

\

\"\"                        (The absolute value of |\"\"15| is 15)

\

\"\"                              (The absolute value of |\"\"10| is 10)

\

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

\

= 55                                           (Add: 45 + 10 = 55)\"\"

\

The value of the expression is 55.