What is 4/9 + 5/9?

This is how to add

Step 1

Since our denominators match, we can add the numerators.

4 + 5 = 9

Answer:

Step 2

Now, do we need to simplify this fraction?

First, we attempt to divide it by 2...

Nope! So now we try the next greatest prime number, 3...

Are both the numerator and the denominator evenly divisible by 3? Yes! So we reduce it:

Let's try dividing by that again...

Are both the numerator and the denominator evenly divisible by 3? Yes! So we reduce it:

Let's try dividing by that again...

No good. 3 is larger than 1. So we're done reducing.

There you have it! Here's the final answer to 4/9 + 5/9