math help

What is 91/1 + 3/12?

What is 91/1 + 3/12?

This is how you add

91
1
+
3
12

Step 1

We have to make sure the denominators are equal.

12 goes into 1 evenly, so we only need to multiply one term to get a common denominator.

Multiply 91 by 12, and get 1092, then we multiply 1 by 12 and get 12.

91/1 times 12

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

1092
12
+
3
12

Step 2

Since our denominators match, we can add the numerators.

1092 + 3 = 1095

Answer:

1095
12

Step 3

Now, do we need to simplify this fraction?

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

No good. So next you try the next prime number, which is 3...

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

1095
12
÷ 3 =
365
4

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 5...

No good. 5 is larger than 4. So we're done reducing.

And we're done! Here's the final answer to 91/1 + 3/12

91
1
+
3
12
=
365
4
© 2014 Randy Tayler