What is 12/1 + 9/10?
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Here's how we add
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Step 1We have to make sure the denominators are equal. Since 1 is evenly divided by 10, we can multiply just one term to get a common denominator. Multiply 12 by 10, and get 120, then we multiply 1 by 10 and get 10. So now our fractions look like this:
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Step 2Since our denominators match, we can add the numerators. 120 + 9 = 129 So the answer is:
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Step 3Last 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... 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. 11 is larger than 10. So we're done reducing. And we're done! Here's the final answer to 12/1 + 9/10
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