### Home > CC1 > Chapter 3 > Lesson 3.2.1 > Problem 3-97

3-97.

Compute each sum or difference. Homework Help ✎

Before adding or subtracting, convert one or both fractions so that they have a common denominator.

The Lowest Common Denominator is 90.

The Lowest Common Denominator is 22.

The Lowest Common Denominator is 15.