math help

What is 64/4 + 2/12?

What is 64/4 + 2/12?

Here's how you add

64
4
+
2
12

Step 1

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

Since 4 is evenly divided by 12, we can multiply just one term to get a common denominator.

Multiply 64 by 3, and get 192, then we multiply 4 by 3 and get 12.

64/4 times 3

The problem now has new fractions to add:

192
12
+
2
12

Step 2

Since our denominators match, we can add the numerators.

192 + 2 = 194

This yields the answer

194
12

Step 3

The last step is to reduce the fraction if we can.

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:

194
12
÷ 2 =
97
6

Now, try the same number again.

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

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

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

No good. 7 is larger than 6. So we're done reducing.

Congratulations! Here's your final answer to 64/4 + 2/12

64
4
+
2
12
=
97
6
© 2014 Randy Tayler