### Home > A2C > Chapter 12 > Lesson 12.1.1 > Problem 12-12

12-12.

Find the sum.

Find a common denominator.

Find a common denominator. If you need to, combine them two at a time.

12-12.

Find the sum.

Find a common denominator.

Find a common denominator. If you need to, combine them two at a time.