\"\"\"\"\"\"

\

The given Perimeter of rectangle is \"\".

\

Where l=length, w=wedth.

\

Apply to subtraction property of equality: Subtract 2w from each side.

\

\"\"

\

\"\"                            (Apply additive inverse property: \"\")

\

\"\"                                   (Apply additive inverse property: \"\")\"\"

\

Apply to division property of equality: Divide each side by 2.

\

\"\"

\

\"\"                                   (Cancel common terms)

\

\"\"

\

\"\"\"\"                       (Substitute \"\")

\

\"\"                             (Multiply: 2(30) =60)

\

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

\

\"\"                                           (Divide: \"\")\"\"

\

Width \"\" m.

\