Question 1109942
x children
y adults
{{{system(5x+7y=210,x-y=6)}}}
Use whatever method you want.  Elimination or Substitution.



Notice {{{5x+7y+x-y=210+6}}}

{{{6x+6y=216}}}

{{{x+y=36}}}


and this allows for the system  {{{system(x+y=36,x-y=6)}}}
NOW use Elimination Method on THIS system.
x=21 and y=15.