math help

What is 25/9 + 5/10?

What is 25/9 + 5/10?

Here's how to add

25
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 25 by 10, and get 250, then we multiply 9 by 10 and get 90.

25/9 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:

250
90
+
45
90

Step 2

Since our denominators match, we can add the numerators.

250 + 45 = 295

That gives us an answer of

295
90

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...

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

295
90
÷ 5 =
59
18

Now, try the same number again.

Nope. Try the next prime number, 7...

Nope. Try the next prime number, 11...

Nope. Try the next prime number, 13...

Nope. Try the next prime number, 17...

Nope. Try the next prime number, 19...

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

Congratulations! Here's your final answer to 25/9 + 5/10

25
9
+
5
10
=
59
18
© 2014 Randy Tayler