Respuesta :
Step 1: Assign variable for the unknown that we need to find
Let ' x ' be the number of adult tickets
and Let ' y ' be the number of student tickets
Step 2: Use the given sentence to write an equation.
Sentence: "Your school sold adult and student tickets for a high school play. They sold a total of 782 tickets."
[tex] Number \; of\; adult\; tickets + \; Number \; of\; student\; tickets\; =\; Total\; number\; of\; tickets\\ \\ x + y = 782 [/tex]