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# How do you subtract fractions with unlike denminators?

Updated: 8/17/2019

Wiki User

14y ago

get them to have the same demoninator. like if you have 5/6-3/4 make it 10/12-9/12. then just subtract.

Wiki User

14y ago

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Q: How do you subtract fractions with unlike denminators?
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Related questions

### Do you add and subtract like and unlike fractions in the same way?

no, to add and subtract like and unlike fractions the denominator has to be the same,

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

Finding the LCM will make adding and subtracting fractions easier.

### What are the steps to subtract unlike fractions?

first find a common denominator then subtract the top numbers

### What is a situation where you would use LCM?

To add and subtract unlike fractions.

### When do you use LCM in math?

When you want to add or subtract unlike fractions.

### Why do you have to turn unlike fractions into like fractions to add or subtract?

because its just one of the rules of math :)

### How do you subtract fractions without alike denominators?

Convert unlike fractions to equivalent fractions with common denominators by finding the LCM of the denominators.

### Why do you need to use common denominator?

To get the right answer when you add or subtract unlike fractions.

### When you add or subtract fractions with unlike denominators why do you have to find LCM?

Because to add fractions, the denominators must be equal.

### What are fractions that hav equal in value but may have different numerators and denminators?

Equivalent fractions, e.g. 1/2 = 2/4 = 3/6, etc.

-1/2+7/10

### Why do fractions need to have unlike denominator before you add or subtract them?

The question is based on a complete misunderstanding of what is required. Unlike denominators are NOT required!