Question 739900

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

if the perimeter is {{{P=54ft}}}
{{{L=16ft}}} and
{{{W=x+3}}}, then

{{{54=2*16+2(x+3)}}}


{{{54=32+2x+6}}}

{{{54-32-6=2x}}}

{{{16=2x}}}

{{{16/2=x}}}

{{{8=x}}}

then {{{W=x+3}}}=>{{{W=8+3}}}=>{{{W=11}}}