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Q: What you need to add or subtract fractions?

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Make the fractions equivalent then subtract

add? dont you mean subtract?

To add and subtract fractions, you need common denominators. To find the common denominator, take the LCM of the denominators you wish to add or subtract.

it stay the same when you subtract fractions and when you add fractions.

because it would be diffcult to understand.[you don't add or subtract the demonters]

To add and subtract fractions, you need common denominators. To find the common denominator, find the LCM of the denominators you wish to add or subtract.

The LCM will help you add and subtract fractions. The GCF will help you simplify fractions.

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

I am not entirely sure what you mean, but if you need to add, subtract, or compare two fractions, they need to have the same denominator.

In fractions, you can NEVER add or subtract

You will need to find the LCM in order to add and subtract fractions.

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

The LCM will help you add and subtract fractions. The GCF will help you simplify fractions.

Because you can't add or subtract fractions that have different denominators. Making them like fractions, by multiplying so the denominators are the same, you can add and/or subtract them.

You need common denominators. Then add or subtract the numerators. If the answer is an improper fraction it is common practice to reduce it to a mixed number.

So that you only have to add/subtract the numerator which makes it much easier.

Similar fractions are fractions with the same denominator. In order to add or subtract fractions they need to be similar.

You can add or subtract fractions only if they are "like" fractions, that is, only if they have the same denominator - unless you know your fractions really well.

Numerators

Finding the LCM will help you when you need to add and subtract fractions.

The denominators must be the same before you can add or subtract fractions.

So that you will be able to add and subtract fractions accurately.

When you want to add or subtract fractions and need to find a common denominator.

Any job where you need to add or subtract fractions.

You DO need a common denominator to add, subtract, or compare fractions. You DO NOT need a common denominator to multiply or divide fractions.

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