math help

What is 53/9 + 5/10?

What is 53/9 + 5/10?

Here's how to add

53
9
+
5
10

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 53 by 10, and get 530, then we multiply 9 by 10 and get 90.

53/9 times 10

Now for the second term. You multiply 5 by 9, and get 45, then multiply 9 by 10 and get 90.

5/10 times 9

This gives us a new problem that looks like so:

530
90
+
45
90

Step 2

Since our denominators match, we can add the numerators.

530 + 45 = 575

So what's the answer so far?

575
90

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...

Are both the numerator and the denominator evenly divisible by 5? Yes! So we reduce it:

575
90
÷ 5 =
115
18

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 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. So next you try the next prime number, which is 17...

No good. So next you try the next prime number, which is 19...

No good. 19 is larger than 18. So we're done reducing.

And we're done! Here's the final answer to 53/9 + 5/10

53
9
+
5
10
=
115
18
© 2014 Randy Tayler