# How to Calculate 1/1 Plus 21/6

Are you looking to work out and calculate how to add 1/1 plus 21/6? In this really simple guide, we'll teach you exactly what 1/1 + 21/6 is and walk you through the step-by-process of how to add two fractions together.

To start with, the number above the line in a fraction is called a numerator and the number below the line is called the denominator.

Why do you need to know this? Well, because the easiest way to add fractions together is to make sure both fractions have the same denominator.

Let's set up 1/1 and 21/6 side by side so they are easier to see:

Our denominators are 1 and 6. What we need to do is find the lowest common denominator of the two numbers, which is 6 in this case.

If we multiply the first denominator (1) by 6 we will get 6. If we we multiply the second denominator (6) by 1 we will also get 6. We also need to multiply the numerators above the line by the same amounts so that the fraction values are correct:

This is what 1/1 plus 21/6 looks like with the same denominator:

Now that these fractions have been converted to have the same denominator, we can add the result together to make one fraction:

You're done! You now know exactly how to calculate 1/1 + 21/6. Hopefully you understood the process and can use the same techniques to add other fractions together. The complete answer is below (simplified to the lowest form):

*Note: since the numerator is greater than the denominator in this example, we've simplified it into a mixed fraction.*

## Convert 1/1 plus 21/6 to Decimal

Here's a little bonus calculation for you to easily work out the decimal format of the fraction we calculated. All you need to do is divide the numerator by the denominator and you can convert any fraction to decimal:

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### Preset List of Fraction Addition Examples

Below are links to some preset calculations that are commonly searched for: