What is 91/6 + 2/7?
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Let's add
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Step 1Of course, you can't add two fractions if the denominators (bottom numbers) don't match. To get a common denominator, multiply the denominators together. Then we fix the numerators by multiplying each one by their other term's denominator. Now you multiply 91 by 7, and get 637, then we multiply 6 by 7 and get 42. Do the same for the second term. We multiply 2 by 6, and get 12, then multiply 6 by 7 and get 42. The problem now has new fractions to add:
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Step 2Since our denominators match, we can add the numerators. 637 + 12 = 649 This yields the answer
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Step 3The last step is to reduce the fraction if we can. To find out, we try dividing it by 2... Nope. Try the next prime number, 3... Nope. Try the next prime number, 5... Nope. Try the next prime number, 7... Nope. Try the next prime number, 11... Nope. Try the next prime number, 13... Nope. Try the next prime number, 17... Nope. Try the next prime number, 19... Nope. Try the next prime number, 23... Nope. Try the next prime number, 29... Nope. Try the next prime number, 31... Nope. Try the next prime number, 37... Nope. Try the next prime number, 41... Nope. Try the next prime number, 43... No good. 43 is larger than 42. So we're done reducing. Congratulations! Here's your final answer to 91/6 + 2/7
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