\"\"

\

The statement is “\"\"”.

\

\"\"            (Product of two same signs is positive)

\

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

\

\"\"              (Product of different signs is negative)

\

\"\"          (Rewrite the \"\")

\

\"\"                   (Cancel common terms)

\

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

\

The product is  – 40.