\"distributive\"\"

\

The expression is “\"\"”

\

\"\"             (Write 497 as difference of 500 and 3: \"\")

\

\"\"     (Distribute 7)

\

\"\"           (Multiply: \"\")

\

\"\"                 (Multiply: \"\")

\

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

\

The simplified expression is \"\".