math help

What is 2/8 + 2/4?

What is 2/8 + 2/4?

This is how you add

2
8
+
2
4

Step 1

Our denominators (bottom numbers) don't match, so we can't add yet.

Since 4 is evenly divided by 8, we can multiply just one term to get a common denominator.

Multiply 2 by 2, and get 4, then we multiply 4 by 2 and get 8.

So now our fractions look like this:

2
8
+
4
8

Step 2

Since our denominators match, we can add the numerators.

2 + 4 = 6

So the answer is:

6
8

Step 3

Last of all, we need to simplify the fraction, if possible. Can it be reduced to a simpler fraction?

To find out, we try dividing it by 2...

Are both the numerator and the denominator evenly divisible by 2? Yes! So we reduce it:

6
8
÷ 2 =
3
4

Now, try the same number again.

Nope. Try the next prime number, 3...

Nope. Try the next prime number, 5...

No good. 5 is larger than 3. So we're done reducing.

Congratulations! Here's your final answer to 2/8 + 2/4

2
8
+
2
4
=
3
4
© 2014 Randy Tayler