Question 931520
{{{A=L*W=14}}}
{{{W=L-5}}}
Substituting,
{{{L*(L-5)=14}}}
{{{L^2-5L=14}}}
{{{L^2-5L-14=0}}}
{{{(L-7)(L+2)=0}}}
Two solutions but only the positive solution makes sense here.
{{{L-7=0}}}
{{{L=7}}}
Then,
{{{W=7-5}}}
{{{W=2}}}