Exactly one of the numbers 2, 3, 5 and 7 is placed in each of the four empty reigions formed by circles. A, B, and C so that the sum of the numbers in each circle is the same. each number is used. what is the sum of the numbers in each circle?

At a local museum, the total price for one adult and one child is $11. mrs. smith paid for herself and her three children. she spent $19. record the system of equations to be solved and then find the price of an adult and child ticket using either elimination or substitution.