math
posted by Anonymous .
if a child and adult paid $23 for 2 tickets and an adult ticket is $6.50 more than the childs ticket, how do i get the answer?

Let x = the cost of the child's ticket.
x + x + 6.50 = 23
2x = 23  6.50
2x = 16.50
x = 16.50/2
x = ? 
How do we do this? i got this as one of my math homework questions, i have no clue how to answer it. someone help me?