Posted by **Jessica** on Saturday, January 26, 2013 at 4:18pm.

Which of the following problems can be solved using the equation x-9=15?

A. Allison is 9 years younger than her sister Pam. Allison is 15 years old. What is x, Pam's age?

B. David's portion of the bill is $9 more than Jaleel's portion of the bill. If Jaleel pays $9, find x,the amount in dollars that David pays

C. The sum of two numbers is 15. If one of the numbers is 9, what is x, the other number?

D. Calvin owns 15 CDs. If he gave 9 of them to a friend, what is x, the number of CDs he has left?

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