Question 876994
L length, w width
L=3w-4 and 2w+2L=72;
Perimeter simplifies to {{{w+L=36}}}, then {{{L=36-w}}}.
Substitute in L definition:
{{{36-w=3w-4}}}
{{{36=4w-4}}}
{{{40=4w}}}
{{{highlight(w=10)}}}
Use in L definition, {{{highlight(L=26)}}}.