What is 15/11 + 1/2?
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Let's add
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Step 1We 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 15 by 2, and get 30, then we multiply 11 by 2 and get 22. Now for the second term. You multiply 1 by 11, and get 11, then multiply 11 by 2 and get 22. This gives us a new problem that looks like so:
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Step 2Since our denominators match, we can add the numerators. 30 + 11 = 41 So what's the answer so far?
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Step 3Can 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... 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. So next you try the next prime number, which is 23... No good. 23 is larger than 22. So we're done reducing. And we're done! Here's the final answer to 15/11 + 1/2
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