Question 44904
{{{P = 2l + 2w}}}
{{{P - 2l = 2w}}}
{{{w = (P - 2l)/2}}}
{{{w = P/2 - 2l/2}}}
{{{w = P/2 - l}}}


{{{T = D + pm}}}
{{{D + pm - T = 0}}}
{{{D - T = -pm}}}
{{{-D + T = pm}}}
{{{m = (-D + T)/p}}}