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Updated: 4/28/2022

Wiki User

โ 11y ago

If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator. Then add and simplify.

shanshan Jiang

Lvl 10
โ 2y ago

Wiki User

โ 11y ago

When adding unlike fractions, find the lowest common denominator, convert them to like fractions and proceed with the addition.

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Related questions

### What is the definition of adding and subtracting fractions with unlike denominators?

What is the definition of Adding and Subtracting Like Fractions

### What types of problems can be solved using the the LCM?

Anything having to do with adding or subtracting unlike fractions.

### How is adding like fractions and adding unlike fractions the same?

If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator. Then add and simplify.

### What problems can be solved using gcf and LCM?

Finding the LCM will make adding and subtracting fractions easier.

### Does the denominator have to be the same when adding a fraction?

When adding two or more unlike fractions, yes.

### What must you do first before adding or subtracting unlike fractions?

you must make the fractions equivalent and with the same denomenator

### When can you use common multiples and factors?

Use the LCM when you are adding and subtracting unlike fractions. Use the GCF when you are simplifying fractions.

### Adding and subtracting unlike fractions steps?

first u find a common denominator

### How do you solve a fraction problem when you don't have the same denominator?

If you are adding or subtracting unlike fractions, convert them to equivalent fractions with a common denominator.