math help

What is 45/3 + 2/9?

What is 45/3 + 2/9?

This is how we add

45
3
+
2
9

Step 1

We have to make sure the denominators are equal.

9 goes into 3 evenly, so we only need to multiply one term to get a common denominator.

Multiply 45 by 3, and get 135, then we multiply 3 by 3 and get 9.

45/3 times 3

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

135
9
+
2
9

Step 2

Since our denominators match, we can add the numerators.

135 + 2 = 137

Answer:

137
9

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...

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. 11 is larger than 9. So we're done reducing.

And we're done! Here's the final answer to 45/3 + 2/9

45
3
+
2
9
=
137
9
© 2014 Randy Tayler