What is 45/4 + 1/3?

Here's how we add

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 45 by 3, and get 135, then we multiply 4 by 3 and get 12.

Now for the second term. You multiply 1 by 4, and get 4, then multiply 4 by 3 and get 12.

This gives us a new problem that looks like so:

Step 2

Since our denominators match, we can add the numerators.

135 + 4 = 139

So what's the answer so far?

Step 3

Can this fraction be reduced?

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

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. 13 is larger than 12. So we're done reducing.

And we're done! Here's the final answer to 45/4 + 1/3