math help

What is 64/4 + 5/12?

What is 64/4 + 5/12?

Let's add

64
4
+
5
12

Step 1

Our denominators (bottom numbers) don't match, so we can't add yet.

12 goes into 4 evenly, so we only need to multiply one term to get a common denominator.

Multiply 64 by 3, and get 192, then we multiply 4 by 3 and get 12.

64/4 times 3

This gives us a new problem that looks like so:

192
12
+
5
12

Step 2

Since our denominators match, we can add the numerators.

192 + 5 = 197

So what's the answer so far?

197
12

Step 3

Can this fraction be reduced?

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

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

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 12. So we're done reducing.

Congratulations! Here's your final answer to 64/4 + 5/12

64
4
+
5
12
=
197
12
© 2014 Randy Tayler