math help

What is 24/12 + 5/11?

What is 24/12 + 5/11?

This is how we add

24
12
+
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 24 by 11, and get 264, then we multiply 12 by 11 and get 132.

24/12 times 11

Do the same for the second term. We multiply 5 by 12, and get 60, then multiply 12 by 11 and get 132.

5/11 times 12

So now our fractions look like this:

264
132
+
60
132

Step 2

Since our denominators match, we can add the numerators.

264 + 60 = 324

Now we have an answer.

324
132

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:

324
132
÷ 2 =
162
66

Now, try the same number again.

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

162
66
÷ 2 =
81
33

Now, try the same number again.

Nope. Try the next prime number, 3...

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

81
33
÷ 3 =
27
11

Now, try the same number again.

Nope. Try the next prime number, 5...

Nope. Try the next prime number, 7...

Nope. Try the next prime number, 11...

Nope. Try the next prime number, 13...

No good. 13 is larger than 11. So we're done reducing.

Congratulations! Here's your final answer to 24/12 + 5/11

24
12
+
5
11
=
27
11
© 2014 Randy Tayler