Question 757632

The perimeter of a rectangle is {{{146in}}}. 

The length is {{{L=3W-7in}}}  (if {{{7in}}} shorter than three times the width)

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


{{{2L+2W=146in}}}.....simplify, all terms divide by {{{2}}}

{{{L+W=73in}}}.......eq.1 substitute {{{L=3W-7in}}}

{{{3W-7in+W=73in}}}

{{{4W=73in+7in}}}

{{{4W=80in}}}

{{{W=80in/4}}}

{{{highlight(W=20in)}}}

now find {{{L}}}

{{{L=3*20in-7in}}}

{{{L=60in-7in}}}

{{{highlight(L=53in)}}}