In adding and subtracting fractions with unlike denominators, you have to get a least common denominator which is exactly like the least common multiple it just so happens to be in the denominator.

To add improper fractions: The simplest approach is to add the improper fractions using a common denominator. close common denominatorA denominator that is the same for two or more fractions ...

Another sticking point for many students is adding fractions with different denominators—for example, coming up with 11/12 when asked to add 3/5 and 8/7.

Have you ever tried to add or subtract fractions that have different denominators? It’s tricky, right? Join Ms. Susanna Post in this lesson to learn how to solve these types of challenging ...

Adding and subtracting fractions The secret to successfully adding or subtracting fractions lies in one crucial concept: finding a common denominator. Think of it like trying to combine different ...

Review: Proper and Improper Fractions As we’ve seen, fractions come in a number of different flavors. The typical kind that you’re used to dealing with on an everyday basis—the vanilla ...