math help

What is 10/6 + 2/11?

What is 10/6 + 2/11?

Let's add

10
6
+
2
11

Step 1

We still have different denominators (bottom numbers), though, so we need to get a common denominator. This will make the bottom numbers match. Multiply the denominators together first. Now, multiply each numerator by the other term's denominator.

Now we multiply 10 by 11, and get 110, then we multiply 6 by 11 and get 66.

10/6 times 11

Now for the second term. You multiply 2 by 6, and get 12, then multiply 6 by 11 and get 66.

2/11 times 6

This gives us a new problem that looks like so:

110
66
+
12
66

Step 2

Since our denominators match, we can add the numerators.

110 + 12 = 122

So what's the answer so far?

122
66

Step 3

Can this fraction be reduced?

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

Are both the numerator and the denominator evenly divisible by 2? Yes! So we reduce it:

122
66
÷ 2 =
61
33

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

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...

No good. So next you try the next prime number, which is 13...

No good. So next you try the next prime number, which is 17...

No good. So next you try the next prime number, which is 19...

No good. So next you try the next prime number, which is 23...

No good. So next you try the next prime number, which is 29...

No good. So next you try the next prime number, which is 31...

No good. So next you try the next prime number, which is 37...

No good. 37 is larger than 33. So we're done reducing.

And we're done! Here's the final answer to 10/6 + 2/11

10
6
+
2
11
=
61
33
© 2014 Randy Tayler