math help

What is 15/11 + 7/11?

What is 15/11 + 7/11?

This is how you add

15
11
+
7
11

Step 1

Since our denominators match, we can add the numerators.

15 + 7 = 22

Now we have an answer.

22
11

Step 2

Last of all, we need to simplify the fraction, if possible. Can it be reduced to a simpler fraction?

To find out, we try dividing it by 2...

No good. So next you try the next prime number, which is 3...

No good. So next you try the next prime number, which is 5...

No good. So next you try the next prime number, which is 7...

No good. So next you try the next prime number, which is 11...

Are both the numerator and the denominator evenly divisible by 11? Yes! So we reduce it:

22
11
÷ 11 =
2
1

So far so good... let's try to divide by that number again.

No good. 11 is larger than 2. So we're done reducing.

And we're done! Here's the final answer to 15/11 + 7/11

15
11
+
7
11
=
2
1
= 2
© 2014 Randy Tayler