math help

What is 16/48 + 5/11?

What is 16/48 + 5/11?

This is how we add

16
48
+
5
11

Step 1

We can't add two fractions with different denominators (the bottom number). So you need to get a common denominator - both bottom numbers need to match. To do this, you'll multiply the denominators times each other... but the numerators have to change, too. They get multiplied by the other term's denominator.

So we multiply 16 by 11, and get 176, then we multiply 48 by 11 and get 528.

16/48 times 11

Do the same for the second term. We multiply 5 by 48, and get 240, then multiply 48 by 11 and get 528.

5/11 times 48

So now our fractions look like this:

176
528
+
240
528

Step 2

Since our denominators match, we can add the numerators.

176 + 240 = 416

So the answer is:

416
528

Step 3

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...

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

416
528
÷ 2 =
208
264

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:

208
264
÷ 2 =
104
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:

104
132
÷ 2 =
52
66

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:

52
66
÷ 2 =
26
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. 29 is larger than 26. So we're done reducing.

And we're done! Here's the final answer to 16/48 + 5/11

16
48
+
5
11
=
26
33
© 2014 Randy Tayler