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.

Fractions, often perceived as daunting, become manageable with the right approach. Addition and subtraction require finding a common denominator, while multiplication involves directly multiplying ...

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 ...

Find out how to add and subtract fractions with matching and different denominators in this Year 6 article from BBC Bitesize.

Learn how to add and subtract fractions with this BBC BItesize Scotland Mathematics guide for Third Level Curriculum for Excellence.

Use visual fraction models to add and subtract fractions with the same denominators.

Why do you need to find the lowest common denominator when adding or subtracting fractions but not when multiplying them? And why do you have to invert the second fraction and multiply when dividing?