math help

What is 100/24 + 8/11?

What is 100/24 + 8/11?

This is how we add

100
24
+
8
11

Step 1

Can you add yet? Nope! The denominators don't match. We need a common denominator. So next we take both denominators and multiply them. Next, take each numerator and multiply it by the denominator of the other term.

So, we multiply 100 by 11, and get 1100, then we multiply 24 by 11 and get 264.

100/24 times 11

Now for the second term. You multiply 8 by 24, and get 192, then multiply 24 by 11 and get 264.

8/11 times 24

We now have a new problem, that looks like this:

1100
264
+
192
264

Step 2

Since our denominators match, we can add the numerators.

1100 + 192 = 1292

That gives us the sum, which is

1292
264

Step 3

Now, do we need to simplify this fraction?

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

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

1292
264
÷ 2 =
646
132

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

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

646
132
÷ 2 =
323
66

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. So next you try the next prime number, which is 41...

No good. So next you try the next prime number, which is 43...

No good. So next you try the next prime number, which is 47...

No good. So next you try the next prime number, which is 53...

No good. So next you try the next prime number, which is 59...

No good. So next you try the next prime number, which is 61...

No good. So next you try the next prime number, which is 67...

No good. 67 is larger than 66. So we're done reducing.

And we're done! Here's the final answer to 100/24 + 8/11

100
24
+
8
11
=
323
66
© 2014 Randy Tayler