Question 97035
Let x=# of children, y=# of adults



Set up the following system

{{{x+y=23}}} "If there were 23 people at a performance"
{{{8x+9y=193}}} "Adult tickets for a play cost $9 and child tickets cost $8"



*[invoke solving_linear_system_by_substitution 1, 1, 23, 8, 9, 193]



So that means 14 children and 9 adults attended the play