Question 907900
w width, L length


{{{2w+2L=56}}}, becomes {{{w+L=28}}};


{{{2(2w)+2(L+25)=128}}}
{{{4w+2L+50=128}}}
{{{2w+L=(128-50)/2}}}
{{{2w+L=39}}};


{{{highlight(system(w+L=28,2w+L=39))}}}
Two linear equations in two unknowns.
Solve the system.