Question 988757
{{{L=W+12}}}
.
.
{{{2(L+W)=68}}}
{{{L+W=34}}}
Substituting from above,
{{{W+12+W=34}}}
{{{2W=22}}}
{{{W=11}}}
So then,
{{{L=11+12}}}
{{{L=23}}}