Titus Serano asked, updated on July 26th, 2021; Topic:
how to subtract fractions with unlike denominators

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Here's the easy way to **subtract fractions** that have **different denominators**: Cross-multiply the two **fractions** and **subtract** the second number from the first to get the numerator of the answer. After you cross-multiply, be sure to **subtract** in the correct order.

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For that reason, how do you subtract fractions with the same denominator step by step?

**There are 3 simple steps to subtract fractions**

Beside, how do you subtract a whole number from a mixed fraction?

Quite so, how do you add and subtract fractions examples?

A simple **example** is when the denominators are already the same: Since the denominators are the same in each question, you just **add** or **subtract** the numerators to get the answers. Here we will try a problem where the denominators are not the same. As you can see, these **fractions** do not have the same denominator.

What is the rule for adding and subtracting fractions?

**To add** or **subtract fractions** they must have the same denominator (the bottom value). If the denominators are already the same then it is just a matter of either **adding** or **subtracting** the numerators (the top value). If the denominators are different then a common denominator needs to be found.

To **subtract mixed numbers**, **subtract** the whole **number** parts of the **mixed numbers** and then **subtract** the **fraction** parts in the **mixed numbers**. Finally, combine the whole **number** answer and the **fraction** answer to express the answer as a **mixed number**. **Subtract**. Simplify the answer and write as a **mixed number**.

The **denominator** of a **fraction** tells **you** the relative size of the pieces. ... Therefore, the reason **fractions need a common denominator** before **adding or subtracting** is so that the numbers of pieces **you** are **adding**/**subtracting** are all the same size.

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.

The fractions have the same denominators so you can start by **adding** the first two fractions. **Add** the fractions before **adding** the whole **numbers**. Then, take the sum and **subtract** the **third fraction**. **Subtract** the fractions before **subtracting** the whole **numbers**.

Divide the numerator by the denominator. Write the result as the **whole number**. Write any remainder as the numerator of the fraction. The denominator stays the same.

To make the **denominators** the same we can: Multiply top and bottom of each fraction by the **denominator** of the other. We simplified the fraction 2032 to 1016 , then to 58 by dividing the top and bottom by 2 each time, and that is as simple as it can get!

To add or subtract **fractions with different denominators**, we first must write them as equivalent **fractions** having the same **denominator**. We'll use the techniques from the previous section to find the LCM of the **denominators** of the **fractions**. Recall that we call this the LCD (the least common **denominator**).

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