The number of boxes of cookies sold by Sarah was 50 fewer than the number of boxes of cookies sold by Keiko. The number of boxes
of cookies sold by Imelda was 22 greater than the number sold by Keiko. Write an algebraic expression for each quantity. Use x to represent the unknown value.
the number of boxes of cookies sold by Sarah
= the number of boxes of cookies sold by Keiko
= the number of boxes of cookies sold by Imelda
