Question 958039
{{{R*S=216}}}
{{{R=S-6}}}
Substituting,
{{{(S-6)S=216}}}
{{{S^2-6S-216=0}}}
{{{(S-18)(S+12)=0}}}
Only the positive solution makes sense here.
{{{S-18=0}}}
{{{S=18}}}
Then,
{{{R=18-6}}}
{{{R=12}}}
12 rows with 18 seats