Question 416059


perimeter {{{P= 2L + 2W}}}

where 

{{{L = length}}}
{{{W = width}}}
.
Plug in what was given and solve for {{{L}}}:

{{{P= 2L + 2W}}}


{{{6x + 6 = 2L + 2x}}}.....divide both sides by {{{2}}}

{{{3x + 3 = L + x}}}....

{{{2x + 3 = L}}}


{{{2x + 3 }}}.......this is your binomial expression for length