Learn how to add/subtract rational expressions with trinomials in the denominator. When adding or subtracting two or more ...

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.

It is less straightforward to picture the answer to this addition because the denominators (bottom numbers) are different. You can only add and subtract fractions when the bottom numbers, or ...