What is 3/20 + 5/10?
|
This is how we add
|
|||||||||||
Step 1We have to make sure the denominators are equal. Since 10 is evenly divided by 20, we can multiply just one term to get a common denominator. Multiply 5 by 2, and get 10, then we multiply 10 by 2 and get 20. The problem now has new fractions to add:
|
|||||||||||
Step 2Since our denominators match, we can add the numerators. 3 + 10 = 13 The sum we get is
|
|||||||||||
Step 3The last step is to reduce the fraction if we can. To find out, we try dividing 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. 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. 17 is larger than 13. So we're done reducing. And we're done! Here's the final answer to 3/20 + 5/10
|