IXL | Subtracting fractions with unlike denominators

Subtracting fractions with unlike denominators

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When you have fractions with different denominators, you can use

to subtract them. Look at the models to see how.

To subtract

–

you can think of

Those fractions are equivalent, or the same.

The models show that

–

You can also subtract fractions without models. When you have fractions with different denominators, follow these steps to subtract:

Let's try it with

–

First, rename the fractions using a common denominator. The

of these fractions is 12. Multiply to make equivalent fractions with a denominator of 12.

Then, subtract the numerators and keep the denominator the same.

–

is already in simplest form. So,

–

$Loading inline skill Subtract fractions with unlike denominators...$ Subtract fractions with unlike denominators

$Subtract fractions with unlike denominators using models$

Subtract fractions with unlike denominators using models

$Subtract fractions with unlike denominators$

Subtract fractions with unlike denominators

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